20 Adorable First Halloween Costume Ideas for Your Baby


Source:
Source:
Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Source:
Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source:
Source:
Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Source:
Source: Pinterest

6.Baby Bat in the Night

Looking for a costume that feels Halloween-y but still cozy and not too spooky? Enter: the baby bat.

Bat costumes usually include soft wings attached to a hoodie or onesie and little ears on the hood. Go for gray or black fleece for a night-sky vibe that still feels sweet.

This costume shines in nighttime photo sessions under twinkly lights or even just curled up in your arms like the cutest nocturnal critter ever.

Source: Pinterest

7.Little Ghost (Not Too Scary, Promise)

You don’t need to be over-the-top to be adorable. Sometimes, the simplest costume—like a classic ghost—can be the most charming.

Choose a white romper or onesie with a cute ghost face printed on the front, or go full DIY with a soft white hooded blanket. Avoid anything that covers the baby’s face, of course—comfort and safety come first.

Pair it with white booties and maybe even a little black bow or beanie for extra flair.

Source: Pinterest

8.Baby Chef in the Kitchen

Got a little foodie in the making? A baby chef costume is quirky, comfy, and oh-so-cute.

This look typically includes a soft apron onesie, a puffy white chef hat (secured with a headband or gentle strap), and accessories like a plush spoon or oven mitt. It’s perfect for little ones who love to play with kitchen utensils anyway!

Bonus idea: Parents can dress as ingredients—salt, pepper, or spaghetti noodles. A recipe for laughter!

Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source: Pinterest

13.Baby Butterfly or Ladybug

Butterflies and ladybugs are always a sweet, colorful option—especially for babies who love being outside.

These costumes often feature lightweight wings, bright patterns, and comfy bodysuits. For butterflies, pastel colors or vibrant blues work great, while ladybugs shine in classic red-and-black polka dots.

These looks are perfect for nature-themed Halloween events or garden photoshoots.

Source: Pinterest

14.Little Monster (Cute, Not Creepy)

Let’s redefine the word “monster”—because this kind is adorable.

Baby monster costumes often come in bright colors with googly eyes, silly horns, and fuzzy textures. Choose from blue, green, or pink depending on your baby’s personality.

This look is great for little ones with big personalities—it turns every wiggle into a wild, wonderful dance move.

Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Let’s be honest—baby’s first Halloween isn’t really about trick-or-treating. It’s about the memories, the photos, and dressing them up in something so cute it practically causes a sugar rush on its own.

You’ll only get one first Halloween with your little one, and it’s the perfect excuse to lean into the fun. Whether you’re heading to a pumpkin patch, hosting a baby-friendly costume party, or just cuddling on the couch, the right costume can make the whole day extra special.

But with so many options out there—classic, creative, hilarious, handmade—how do you pick just one? Let’s walk through the absolute cutest, coziest, and most creative Halloween costume ideas for your baby that will leave everyone swooning (and maybe even a little jealous they can’t wear it too).

1.Classic Pumpkin Cutie

Let’s start with the all-time favorite: the pumpkin baby.

There’s something timeless and universally loved about seeing a tiny human dressed up as a plump orange gourd. A pumpkin costume usually comes in soft, plush material, which means your baby stays warm and comfy during chilly fall evenings.

Look for costumes with little green leafy hats or hoods—it’s that extra detail that makes the whole look pop. Bonus points if you carry a mini pumpkin trick-or-treat bag for photos!

Source: Pinterest

2.Little Lion Roar

Is your baby already making adorable little growls or gurgles? A lion costume might just match their spirit.

Lion costumes for babies usually come with a fuzzy mane hood, a cozy onesie body, and a tiny tail in the back. They’re soft, easy to zip up, and make for precious photos—especially when baby is crawling around like the king or queen of the jungle.

You can even coordinate your own outfit by dressing as a zookeeper or safari explorer. Family costumes, anyone?

Source: Pinterest

3.Baby Bumblebee Buzz

Looking for something bright, cheerful, and full of personality? Say hello to the baby bumblebee.

With bold yellow and black stripes, tiny antennae, and soft little wings, this costume checks every box. It’s gender-neutral, cozy, and ideal for photos in flower fields or pumpkin patches.

You can also make it extra sweet with a little flower crown or matching booties that look like pollen pods. Buzz-worthy, right?

Source: Pinterest

4.Snuggly Little Lamb

Babies already look like soft clouds when they’re sleeping. Why not make it official with a lamb costume?

These costumes usually feature sherpa-like fleece material that keeps your baby extra warm. Add in floppy ears and a pink nose, and you’ve got an adorable little farm animal look that melts hearts instantly.

This one works great for newborns and younger babies who might be snoozing through most of the festivities.

Source: Pinterest

5.Tiny T-Rex or Dino Delight

Got a little one who loves to roar—or just throw tiny tantrums? Then a dino costume fits perfectly.

Baby dinosaur costumes come in every color you can imagine, complete with spiky tails, little claws, and even dino hoodies. Some are plush and full-body, while others are hooded rompers for quick and easy diaper changes.

And if you’ve got siblings? Coordinate with matching dino species for a prehistoric family costume moment.

Source: Pinterest

6.Baby Bat in the Night

Looking for a costume that feels Halloween-y but still cozy and not too spooky? Enter: the baby bat.

Bat costumes usually include soft wings attached to a hoodie or onesie and little ears on the hood. Go for gray or black fleece for a night-sky vibe that still feels sweet.

This costume shines in nighttime photo sessions under twinkly lights or even just curled up in your arms like the cutest nocturnal critter ever.

Source: Pinterest

7.Little Ghost (Not Too Scary, Promise)

You don’t need to be over-the-top to be adorable. Sometimes, the simplest costume—like a classic ghost—can be the most charming.

Choose a white romper or onesie with a cute ghost face printed on the front, or go full DIY with a soft white hooded blanket. Avoid anything that covers the baby’s face, of course—comfort and safety come first.

Pair it with white booties and maybe even a little black bow or beanie for extra flair.

Source: Pinterest

8.Baby Chef in the Kitchen

Got a little foodie in the making? A baby chef costume is quirky, comfy, and oh-so-cute.

This look typically includes a soft apron onesie, a puffy white chef hat (secured with a headband or gentle strap), and accessories like a plush spoon or oven mitt. It’s perfect for little ones who love to play with kitchen utensils anyway!

Bonus idea: Parents can dress as ingredients—salt, pepper, or spaghetti noodles. A recipe for laughter!

Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source: Pinterest

13.Baby Butterfly or Ladybug

Butterflies and ladybugs are always a sweet, colorful option—especially for babies who love being outside.

These costumes often feature lightweight wings, bright patterns, and comfy bodysuits. For butterflies, pastel colors or vibrant blues work great, while ladybugs shine in classic red-and-black polka dots.

These looks are perfect for nature-themed Halloween events or garden photoshoots.

Source: Pinterest

14.Little Monster (Cute, Not Creepy)

Let’s redefine the word “monster”—because this kind is adorable.

Baby monster costumes often come in bright colors with googly eyes, silly horns, and fuzzy textures. Choose from blue, green, or pink depending on your baby’s personality.

This look is great for little ones with big personalities—it turns every wiggle into a wild, wonderful dance move.

Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Source:
Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source:
Source:
Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Let’s be honest—baby’s first Halloween isn’t really about trick-or-treating. It’s about the memories, the photos, and dressing them up in something so cute it practically causes a sugar rush on its own.

You’ll only get one first Halloween with your little one, and it’s the perfect excuse to lean into the fun. Whether you’re heading to a pumpkin patch, hosting a baby-friendly costume party, or just cuddling on the couch, the right costume can make the whole day extra special.

But with so many options out there—classic, creative, hilarious, handmade—how do you pick just one? Let’s walk through the absolute cutest, coziest, and most creative Halloween costume ideas for your baby that will leave everyone swooning (and maybe even a little jealous they can’t wear it too).

1.Classic Pumpkin Cutie

Let’s start with the all-time favorite: the pumpkin baby.

There’s something timeless and universally loved about seeing a tiny human dressed up as a plump orange gourd. A pumpkin costume usually comes in soft, plush material, which means your baby stays warm and comfy during chilly fall evenings.

Look for costumes with little green leafy hats or hoods—it’s that extra detail that makes the whole look pop. Bonus points if you carry a mini pumpkin trick-or-treat bag for photos!

Source: Pinterest

2.Little Lion Roar

Is your baby already making adorable little growls or gurgles? A lion costume might just match their spirit.

Lion costumes for babies usually come with a fuzzy mane hood, a cozy onesie body, and a tiny tail in the back. They’re soft, easy to zip up, and make for precious photos—especially when baby is crawling around like the king or queen of the jungle.

You can even coordinate your own outfit by dressing as a zookeeper or safari explorer. Family costumes, anyone?

Source: Pinterest

3.Baby Bumblebee Buzz

Looking for something bright, cheerful, and full of personality? Say hello to the baby bumblebee.

With bold yellow and black stripes, tiny antennae, and soft little wings, this costume checks every box. It’s gender-neutral, cozy, and ideal for photos in flower fields or pumpkin patches.

You can also make it extra sweet with a little flower crown or matching booties that look like pollen pods. Buzz-worthy, right?

Source: Pinterest

4.Snuggly Little Lamb

Babies already look like soft clouds when they’re sleeping. Why not make it official with a lamb costume?

These costumes usually feature sherpa-like fleece material that keeps your baby extra warm. Add in floppy ears and a pink nose, and you’ve got an adorable little farm animal look that melts hearts instantly.

This one works great for newborns and younger babies who might be snoozing through most of the festivities.

Source: Pinterest

5.Tiny T-Rex or Dino Delight

Got a little one who loves to roar—or just throw tiny tantrums? Then a dino costume fits perfectly.

Baby dinosaur costumes come in every color you can imagine, complete with spiky tails, little claws, and even dino hoodies. Some are plush and full-body, while others are hooded rompers for quick and easy diaper changes.

And if you’ve got siblings? Coordinate with matching dino species for a prehistoric family costume moment.

Source: Pinterest

6.Baby Bat in the Night

Looking for a costume that feels Halloween-y but still cozy and not too spooky? Enter: the baby bat.

Bat costumes usually include soft wings attached to a hoodie or onesie and little ears on the hood. Go for gray or black fleece for a night-sky vibe that still feels sweet.

This costume shines in nighttime photo sessions under twinkly lights or even just curled up in your arms like the cutest nocturnal critter ever.

Source: Pinterest

7.Little Ghost (Not Too Scary, Promise)

You don’t need to be over-the-top to be adorable. Sometimes, the simplest costume—like a classic ghost—can be the most charming.

Choose a white romper or onesie with a cute ghost face printed on the front, or go full DIY with a soft white hooded blanket. Avoid anything that covers the baby’s face, of course—comfort and safety come first.

Pair it with white booties and maybe even a little black bow or beanie for extra flair.

Source: Pinterest

8.Baby Chef in the Kitchen

Got a little foodie in the making? A baby chef costume is quirky, comfy, and oh-so-cute.

This look typically includes a soft apron onesie, a puffy white chef hat (secured with a headband or gentle strap), and accessories like a plush spoon or oven mitt. It’s perfect for little ones who love to play with kitchen utensils anyway!

Bonus idea: Parents can dress as ingredients—salt, pepper, or spaghetti noodles. A recipe for laughter!

Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source: Pinterest

13.Baby Butterfly or Ladybug

Butterflies and ladybugs are always a sweet, colorful option—especially for babies who love being outside.

These costumes often feature lightweight wings, bright patterns, and comfy bodysuits. For butterflies, pastel colors or vibrant blues work great, while ladybugs shine in classic red-and-black polka dots.

These looks are perfect for nature-themed Halloween events or garden photoshoots.

Source: Pinterest

14.Little Monster (Cute, Not Creepy)

Let’s redefine the word “monster”—because this kind is adorable.

Baby monster costumes often come in bright colors with googly eyes, silly horns, and fuzzy textures. Choose from blue, green, or pink depending on your baby’s personality.

This look is great for little ones with big personalities—it turns every wiggle into a wild, wonderful dance move.

Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Source:
Source: Pinterest

6.Baby Bat in the Night

Looking for a costume that feels Halloween-y but still cozy and not too spooky? Enter: the baby bat.

Bat costumes usually include soft wings attached to a hoodie or onesie and little ears on the hood. Go for gray or black fleece for a night-sky vibe that still feels sweet.

This costume shines in nighttime photo sessions under twinkly lights or even just curled up in your arms like the cutest nocturnal critter ever.

Source: Pinterest

7.Little Ghost (Not Too Scary, Promise)

You don’t need to be over-the-top to be adorable. Sometimes, the simplest costume—like a classic ghost—can be the most charming.

Choose a white romper or onesie with a cute ghost face printed on the front, or go full DIY with a soft white hooded blanket. Avoid anything that covers the baby’s face, of course—comfort and safety come first.

Pair it with white booties and maybe even a little black bow or beanie for extra flair.

Source: Pinterest

8.Baby Chef in the Kitchen

Got a little foodie in the making? A baby chef costume is quirky, comfy, and oh-so-cute.

This look typically includes a soft apron onesie, a puffy white chef hat (secured with a headband or gentle strap), and accessories like a plush spoon or oven mitt. It’s perfect for little ones who love to play with kitchen utensils anyway!

Bonus idea: Parents can dress as ingredients—salt, pepper, or spaghetti noodles. A recipe for laughter!

Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source: Pinterest

13.Baby Butterfly or Ladybug

Butterflies and ladybugs are always a sweet, colorful option—especially for babies who love being outside.

These costumes often feature lightweight wings, bright patterns, and comfy bodysuits. For butterflies, pastel colors or vibrant blues work great, while ladybugs shine in classic red-and-black polka dots.

These looks are perfect for nature-themed Halloween events or garden photoshoots.

Source: Pinterest

14.Little Monster (Cute, Not Creepy)

Let’s redefine the word “monster”—because this kind is adorable.

Baby monster costumes often come in bright colors with googly eyes, silly horns, and fuzzy textures. Choose from blue, green, or pink depending on your baby’s personality.

This look is great for little ones with big personalities—it turns every wiggle into a wild, wonderful dance move.

Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Let’s be honest—baby’s first Halloween isn’t really about trick-or-treating. It’s about the memories, the photos, and dressing them up in something so cute it practically causes a sugar rush on its own.

You’ll only get one first Halloween with your little one, and it’s the perfect excuse to lean into the fun. Whether you’re heading to a pumpkin patch, hosting a baby-friendly costume party, or just cuddling on the couch, the right costume can make the whole day extra special.

But with so many options out there—classic, creative, hilarious, handmade—how do you pick just one? Let’s walk through the absolute cutest, coziest, and most creative Halloween costume ideas for your baby that will leave everyone swooning (and maybe even a little jealous they can’t wear it too).

1.Classic Pumpkin Cutie

Let’s start with the all-time favorite: the pumpkin baby.

There’s something timeless and universally loved about seeing a tiny human dressed up as a plump orange gourd. A pumpkin costume usually comes in soft, plush material, which means your baby stays warm and comfy during chilly fall evenings.

Look for costumes with little green leafy hats or hoods—it’s that extra detail that makes the whole look pop. Bonus points if you carry a mini pumpkin trick-or-treat bag for photos!

Source: Pinterest

2.Little Lion Roar

Is your baby already making adorable little growls or gurgles? A lion costume might just match their spirit.

Lion costumes for babies usually come with a fuzzy mane hood, a cozy onesie body, and a tiny tail in the back. They’re soft, easy to zip up, and make for precious photos—especially when baby is crawling around like the king or queen of the jungle.

You can even coordinate your own outfit by dressing as a zookeeper or safari explorer. Family costumes, anyone?

Source: Pinterest

3.Baby Bumblebee Buzz

Looking for something bright, cheerful, and full of personality? Say hello to the baby bumblebee.

With bold yellow and black stripes, tiny antennae, and soft little wings, this costume checks every box. It’s gender-neutral, cozy, and ideal for photos in flower fields or pumpkin patches.

You can also make it extra sweet with a little flower crown or matching booties that look like pollen pods. Buzz-worthy, right?

Source: Pinterest

4.Snuggly Little Lamb

Babies already look like soft clouds when they’re sleeping. Why not make it official with a lamb costume?

These costumes usually feature sherpa-like fleece material that keeps your baby extra warm. Add in floppy ears and a pink nose, and you’ve got an adorable little farm animal look that melts hearts instantly.

This one works great for newborns and younger babies who might be snoozing through most of the festivities.

Source: Pinterest

5.Tiny T-Rex or Dino Delight

Got a little one who loves to roar—or just throw tiny tantrums? Then a dino costume fits perfectly.

Baby dinosaur costumes come in every color you can imagine, complete with spiky tails, little claws, and even dino hoodies. Some are plush and full-body, while others are hooded rompers for quick and easy diaper changes.

And if you’ve got siblings? Coordinate with matching dino species for a prehistoric family costume moment.

Source: Pinterest

6.Baby Bat in the Night

Looking for a costume that feels Halloween-y but still cozy and not too spooky? Enter: the baby bat.

Bat costumes usually include soft wings attached to a hoodie or onesie and little ears on the hood. Go for gray or black fleece for a night-sky vibe that still feels sweet.

This costume shines in nighttime photo sessions under twinkly lights or even just curled up in your arms like the cutest nocturnal critter ever.

Source: Pinterest

7.Little Ghost (Not Too Scary, Promise)

You don’t need to be over-the-top to be adorable. Sometimes, the simplest costume—like a classic ghost—can be the most charming.

Choose a white romper or onesie with a cute ghost face printed on the front, or go full DIY with a soft white hooded blanket. Avoid anything that covers the baby’s face, of course—comfort and safety come first.

Pair it with white booties and maybe even a little black bow or beanie for extra flair.

Source: Pinterest

8.Baby Chef in the Kitchen

Got a little foodie in the making? A baby chef costume is quirky, comfy, and oh-so-cute.

This look typically includes a soft apron onesie, a puffy white chef hat (secured with a headband or gentle strap), and accessories like a plush spoon or oven mitt. It’s perfect for little ones who love to play with kitchen utensils anyway!

Bonus idea: Parents can dress as ingredients—salt, pepper, or spaghetti noodles. A recipe for laughter!

Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source: Pinterest

13.Baby Butterfly or Ladybug

Butterflies and ladybugs are always a sweet, colorful option—especially for babies who love being outside.

These costumes often feature lightweight wings, bright patterns, and comfy bodysuits. For butterflies, pastel colors or vibrant blues work great, while ladybugs shine in classic red-and-black polka dots.

These looks are perfect for nature-themed Halloween events or garden photoshoots.

Source: Pinterest

14.Little Monster (Cute, Not Creepy)

Let’s redefine the word “monster”—because this kind is adorable.

Baby monster costumes often come in bright colors with googly eyes, silly horns, and fuzzy textures. Choose from blue, green, or pink depending on your baby’s personality.

This look is great for little ones with big personalities—it turns every wiggle into a wild, wonderful dance move.

Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Source:
Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source:
Source:
Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Source:
Source: Pinterest

6.Baby Bat in the Night

Looking for a costume that feels Halloween-y but still cozy and not too spooky? Enter: the baby bat.

Bat costumes usually include soft wings attached to a hoodie or onesie and little ears on the hood. Go for gray or black fleece for a night-sky vibe that still feels sweet.

This costume shines in nighttime photo sessions under twinkly lights or even just curled up in your arms like the cutest nocturnal critter ever.

Source: Pinterest

7.Little Ghost (Not Too Scary, Promise)

You don’t need to be over-the-top to be adorable. Sometimes, the simplest costume—like a classic ghost—can be the most charming.

Choose a white romper or onesie with a cute ghost face printed on the front, or go full DIY with a soft white hooded blanket. Avoid anything that covers the baby’s face, of course—comfort and safety come first.

Pair it with white booties and maybe even a little black bow or beanie for extra flair.

Source: Pinterest

8.Baby Chef in the Kitchen

Got a little foodie in the making? A baby chef costume is quirky, comfy, and oh-so-cute.

This look typically includes a soft apron onesie, a puffy white chef hat (secured with a headband or gentle strap), and accessories like a plush spoon or oven mitt. It’s perfect for little ones who love to play with kitchen utensils anyway!

Bonus idea: Parents can dress as ingredients—salt, pepper, or spaghetti noodles. A recipe for laughter!

Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source: Pinterest

13.Baby Butterfly or Ladybug

Butterflies and ladybugs are always a sweet, colorful option—especially for babies who love being outside.

These costumes often feature lightweight wings, bright patterns, and comfy bodysuits. For butterflies, pastel colors or vibrant blues work great, while ladybugs shine in classic red-and-black polka dots.

These looks are perfect for nature-themed Halloween events or garden photoshoots.

Source: Pinterest

14.Little Monster (Cute, Not Creepy)

Let’s redefine the word “monster”—because this kind is adorable.

Baby monster costumes often come in bright colors with googly eyes, silly horns, and fuzzy textures. Choose from blue, green, or pink depending on your baby’s personality.

This look is great for little ones with big personalities—it turns every wiggle into a wild, wonderful dance move.

Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

Let’s be honest—baby’s first Halloween isn’t really about trick-or-treating. It’s about the memories, the photos, and dressing them up in something so cute it practically causes a sugar rush on its own.

You’ll only get one first Halloween with your little one, and it’s the perfect excuse to lean into the fun. Whether you’re heading to a pumpkin patch, hosting a baby-friendly costume party, or just cuddling on the couch, the right costume can make the whole day extra special.

But with so many options out there—classic, creative, hilarious, handmade—how do you pick just one? Let’s walk through the absolute cutest, coziest, and most creative Halloween costume ideas for your baby that will leave everyone swooning (and maybe even a little jealous they can’t wear it too).

1.Classic Pumpkin Cutie

Let’s start with the all-time favorite: the pumpkin baby.

There’s something timeless and universally loved about seeing a tiny human dressed up as a plump orange gourd. A pumpkin costume usually comes in soft, plush material, which means your baby stays warm and comfy during chilly fall evenings.

Look for costumes with little green leafy hats or hoods—it’s that extra detail that makes the whole look pop. Bonus points if you carry a mini pumpkin trick-or-treat bag for photos!

Source: Pinterest

2.Little Lion Roar

Is your baby already making adorable little growls or gurgles? A lion costume might just match their spirit.

Lion costumes for babies usually come with a fuzzy mane hood, a cozy onesie body, and a tiny tail in the back. They’re soft, easy to zip up, and make for precious photos—especially when baby is crawling around like the king or queen of the jungle.

You can even coordinate your own outfit by dressing as a zookeeper or safari explorer. Family costumes, anyone?

Source: Pinterest

3.Baby Bumblebee Buzz

Looking for something bright, cheerful, and full of personality? Say hello to the baby bumblebee.

With bold yellow and black stripes, tiny antennae, and soft little wings, this costume checks every box. It’s gender-neutral, cozy, and ideal for photos in flower fields or pumpkin patches.

You can also make it extra sweet with a little flower crown or matching booties that look like pollen pods. Buzz-worthy, right?

Source: Pinterest

4.Snuggly Little Lamb

Babies already look like soft clouds when they’re sleeping. Why not make it official with a lamb costume?

These costumes usually feature sherpa-like fleece material that keeps your baby extra warm. Add in floppy ears and a pink nose, and you’ve got an adorable little farm animal look that melts hearts instantly.

This one works great for newborns and younger babies who might be snoozing through most of the festivities.

Source: Pinterest

5.Tiny T-Rex or Dino Delight

Got a little one who loves to roar—or just throw tiny tantrums? Then a dino costume fits perfectly.

Baby dinosaur costumes come in every color you can imagine, complete with spiky tails, little claws, and even dino hoodies. Some are plush and full-body, while others are hooded rompers for quick and easy diaper changes.

And if you’ve got siblings? Coordinate with matching dino species for a prehistoric family costume moment.

Source: Pinterest

6.Baby Bat in the Night

Looking for a costume that feels Halloween-y but still cozy and not too spooky? Enter: the baby bat.

Bat costumes usually include soft wings attached to a hoodie or onesie and little ears on the hood. Go for gray or black fleece for a night-sky vibe that still feels sweet.

This costume shines in nighttime photo sessions under twinkly lights or even just curled up in your arms like the cutest nocturnal critter ever.

Source: Pinterest

7.Little Ghost (Not Too Scary, Promise)

You don’t need to be over-the-top to be adorable. Sometimes, the simplest costume—like a classic ghost—can be the most charming.

Choose a white romper or onesie with a cute ghost face printed on the front, or go full DIY with a soft white hooded blanket. Avoid anything that covers the baby’s face, of course—comfort and safety come first.

Pair it with white booties and maybe even a little black bow or beanie for extra flair.

Source: Pinterest

8.Baby Chef in the Kitchen

Got a little foodie in the making? A baby chef costume is quirky, comfy, and oh-so-cute.

This look typically includes a soft apron onesie, a puffy white chef hat (secured with a headband or gentle strap), and accessories like a plush spoon or oven mitt. It’s perfect for little ones who love to play with kitchen utensils anyway!

Bonus idea: Parents can dress as ingredients—salt, pepper, or spaghetti noodles. A recipe for laughter!

Source: Pinterest

9.Baby Unicorn Magic

Unicorns are timeless, magical, and totally trending—for good reason.

A unicorn costume usually features pastel rainbow accents, a sparkly horn, and plenty of soft plush material. The best part? You can find ones that double as cozy pajamas for bedtime after the festivities.

Don’t forget the glittery accessories—headbands, booties, or even a tiny matching tutu if your baby can sit up!

Source: Pinterest

10.Little Avocado Toast

Let’s mix adorable with a pinch of hipster fun. A baby avocado costume is always a hit.

The soft green-and-brown palette works well on all skin tones, and the padded pit on the belly adds a hilarious visual punch. Some versions include a matching toast “slice” you can wear for a fun parent-baby duo costume.

This one is equal parts trendy and tongue-in-cheek—and it gets all the likes on social media.

Source: Pinterest

11.Cozy Koala Bear

Cuddly, sleepy, and gray—sound like your baby? A koala costume just might be the perfect match.

These suits are generally plush with a soft hood featuring big round ears and a black button nose. They’re easy to move in and keep your little one warm during outdoor fall activities.

This look pairs great with eucalyptus-themed props or a leafy green onesie underneath.

Source: Pinterest

12.Baby Witch or Wizard

Is your little one already casting spells with their charm? Then it’s time to pull out the pointy hats and go magical.

A baby witch or wizard costume might include a tiny robe, a soft wand, and a felt hat secured with gentle straps. Add stars, moons, or mystical symbols for extra effect.

Go beyond black—try purples, silvers, or emerald greens for a fresh twist on the classic look.


Source: Pinterest

13.Baby Butterfly or Ladybug

Butterflies and ladybugs are always a sweet, colorful option—especially for babies who love being outside.

These costumes often feature lightweight wings, bright patterns, and comfy bodysuits. For butterflies, pastel colors or vibrant blues work great, while ladybugs shine in classic red-and-black polka dots.

These looks are perfect for nature-themed Halloween events or garden photoshoots.

Source: Pinterest

14.Little Monster (Cute, Not Creepy)

Let’s redefine the word “monster”—because this kind is adorable.

Baby monster costumes often come in bright colors with googly eyes, silly horns, and fuzzy textures. Choose from blue, green, or pink depending on your baby’s personality.

This look is great for little ones with big personalities—it turns every wiggle into a wild, wonderful dance move.

Source: Pinterest

15.Baby Superhero in Training

Even the tiniest babies can save the day—especially when they’re in superhero gear.

From Superman to Wonder Woman, tiny capes and bold logos can transform your little one into a powerful mini version of your favorite characters. Soft onesie suits with Velcro capes make dressing up a breeze.

You can even personalize a costume with your baby’s initials to create your very own family hero.

Source: Pinterest

16.Fluffy Snowball or Cloud

This one’s perfect for newborns or very young babies who’ll likely be bundled up anyway.

A fluffy cloud or snowball costume uses soft fleece or tulle to create an airy, angelic look. Add a few raindrops, stars, or even a rainbow headband for a whimsical finish.

This is ideal for babies who are happiest when swaddled and snuggled.

Source: Pinterest

17.Little Crayon

Want something colorful, funny, and simple? Go with a crayon costume!

Baby crayon costumes are usually tube-style onesies with the color name printed down the front and a pointy hat. You can choose any color—blue, red, green, or even glittery gold.

Coordinate with parents or siblings for a full box of crayons vibe!

Source: Pinterest

18.Sleepy Sloth

If your baby’s favorite activity is… doing nothing? This one’s for you.

Sloth costumes are delightfully slow and cozy. Most include a tan-and-brown onesie with a sleepy-eyed hood. Add little clawed booties for a full-on jungle vibe.

This is a hit for chill babies who are more nap-ready than party-ready.

Source: Pinterest

19.Baby Mermaid or Merman

Under the sea, under the stars, and undeniably cute.

A mermaid or merman costume might feature a scaly tail-shaped swaddle, a seashell top, or shimmering fabrics. Add a soft crown or starfish clip, and your baby will look straight out of a storybook.

This one’s especially perfect for beach-loving families or dreamy Halloween photo shoots.

Source: Pinterest

20.Classic Baby Bunny

Nothing beats the classic bunny look—soft, sweet, and totally melt-worthy.

Look for costumes with long floppy ears, a cotton tail, and soft neutral colors like gray, white, or cream. This works well for newborns and crawlers alike.

Add a carrot-shaped rattle or matching booties for extra charm.

Source: Pinterest

Final Thoughts: Make Baby’s First Halloween Unforgettable

Your baby’s first Halloween is more than just a dress-up moment—it’s a beautiful memory in the making.

The best costume for your baby? It’s the one that keeps them comfy, safe, and smiling. Whether you go classic, trendy, hilarious, or magical, the goal is joy—for your baby, for you, and for everyone lucky enough to see those precious photos.

So grab your camera, pick your favorite look, and let the cuteness overload begin. Baby’s first Halloween is going to be one for the books!

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