30 Best Baby Halloween Costumes That Are Frightfully Cute

checked mark Fact-Checked by Jessie Van Amburg  | October 23, 2023
Best Baby Halloween Costumes - baby mario, baby peach, ghost, tiger, bat costumes

Quick Summary

The best baby Halloween costume is comfortable, easy to put on and take off and fits your child properly, according to What to Expect community parent testers. And of course, it has to be cute!

Baby Halloween Costumes

What’s the only thing cuter in this world than your baby? Dressing them up in the most adorable baby Halloween costume, of course! Taking part in this Halloween tradition is so much fun: You can coordinate with your little one or get everyone involved with family Halloween costumes (we also have maternity costume ideas for anyone who's expecting, too!). Or, if you're simply dressing up your baby to snap a quick photo for the ‘gram, that’s okay too! They’re only this little once, after all.

Although Halloween is almost here, there are still so many adorable last-minute baby Halloween costumes to choose from that will arrive in time. You're bound to find the cutest baby costume idea, with options ranging from adorable to silly to (a little) scary. Choose a character from your favorite storybook or kids’ shows, opt for a classic Halloween monster, or go straight up cute and dress your tot as their favorite animal. No matter what direction you go in, we're sure that you'll find a winner ahead, with newborn Halloween costumes, costumes for older babies and toddler costumes, too.

How we chose the best baby Halloween costumes

The best baby Halloween costumes are comfortable, easy to change and fit properly. Still, there are other important factors that we considered when choosing the best baby Halloween costumes, including:

  • Comfort: You’ll want soft fabrics like cotton or fleece that won’t scratch or irritate baby’s soft skin. Avoid options with tulle or lace around the face or hands, which can be irritating. Do your best to pick a costume that matches the temperature, too. A head-to-toe furry costume isn’t ideal for a sunny day, nor will a thin onesie work on a chilly evening. When in doubt, layer.
  • Design: If your baby will be wearing the costume for an hour or longer, save yourself a headache and look for one that allows easy access for diaper changes. Many have snaps along the inseam or leggings that are easy to take on and off.
  • Safety: Costumes should be the right size for your baby. They also shouldn’t have small parts or accessories that could break off and cause a potential choking hazard. And you should avoid anything with pieces that cover their nose or mouth for the same reason. According to American Academy of Pediatrics (AAP) recommendations, costumes should also clearly say “flame resistant” on the label.

You should also keep the following tips in mind when looking for infant Halloween costumes:

  • Follow your baby’s lead. If your tot won’t wear a hat for longer than 60 seconds, save yourself a headache and pick a costume that doesn’t depend on a hat or hood to look complete.
  • Consider cost. Given how quickly babies grow, this is likely a costume that your little one will wear for just this year’s festivities. Unless you plan on saving a costume for the next baby in the family, don’t feel like you have to spend a ton on a great look. 
  • Keep a spare on hand. Considering how common blowouts are among babies, the AAP recommends having a backup costume in case your little one has a leaky diaper or spits up while out on the town.

Why Trust Us?

What to Expect is the world’s most trusted pregnancy and parenting brand for a reason. Our product recommendations are based on expert parent insight, advice from medical professionals and feedback from the millions of parents and parents-to-be in our community. Our editors adhere to the highest research and reporting standards and our team of vetted OB/GYNs, pediatricians and other health professionals ensure our recommended products are safe and effective for you and your baby.

Best Baby Skeleton Costume

Simple Joys by Carter's Unisex Babies Halloween Footed Sleep and Play

simple joys baby skeleton costume bodysuit
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Why We Love It

Keeping things low key for your baby’s first Halloween? You get two looks for one with this sweet set — perfect in case of an accidental blowout. The black bodysuit has an orange and white skeleton pattern on the front, with snaps at the legs and neck for easy on and off. The striped version features a sweet pumpkin-print design and tiny pumpkins on the covered feet, with snaps that go all the way up to the neck. Plus, these can be reworn throughout the season as cozy pajamas. Parents say the fabric is soft and high quality, and love that it comes in a preemie size. (Just note that the slightly different snap design makes the pumpkin version a bit easier to put on than the skeleton one.) 

Sizes: Preemie to 6-9 months

Best Baby Bat Costume

Rutoe My First Halloween Bat Costume

rutoe baby bat halloween costume
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Why We Love It

Newborn driving you a little batty? Have them dress the part with this extremely cute bat playsuit. The long sleeves have attached wings, and the hood has tiny ears and a striped lining for added comfort and style. Snaps along the inseam of the pants make diaper changes a breeze. Parents recommend buying a size up to ensure it fits well. 

Size: 0-3 months to 12-18 months

Best Baby Ghost Costume

Happidoo Baby Halloween Ghost Costume Long Sleeve Romper with Hat

happidoo ghost baby onesie
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Why We Love It

Looking for a spooky costume that’s more sweet than scary? You’ll love this adorable white bodysuit, which has a ghost face on the tummy and a matching hat with “Boo!” emblazoned on the brim. It’s designed like a standard romper, with long sleeves to cover baby’s sensitive skin and snaps along the inseam for simple diaper changes. Parents say that it mostly fits true to size (although it may run slightly big on younger babies) and the fabric, while thin, is nice and soft. However, some parents found that the fabric flares between the snaps, exposing some leg skin — so consider adding a layer underneath if you live in a colder area.

Sizes: 0-3 months to 18-24 months 

Best Baby Cow Costume

MICHLEY Baby Animal Costume Flannel Hooded Romper

Baby cow costume
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Why We Love It

This costume is udder-ly adorable! Baby will be warm and cozy all night with the soft flannel material and hood. The double zipper goes all the way to the back, making quick diaper changes easy. Parents also note that the roominess make it a great option for layering underneath for those who live in chilly climates.

Sizes: 2-5 months to 30-36 months

Best Baby "Little Mermaid" Costume

Dressy Daisy Baby Girl Princess Romper Costume with Headband

dressy daisy princess dress
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Why We Love It

You’ll want this adorable Ariel baby costume to be “part of your world” this Halloween. The bodysuit has a shell decal and ruching on the bodice, and adorable sheer green tulle details at the shoulders and on the attached skirt to ensure your little one looks the part. Snaps at the back and the crotch make for an easy on-off experience, too. The included purple headband completes the look, although is optional if your little one hates anything on her head. Pair with tights and you’ve got a baby mermaid on your hands! Parents say it’s incredibly cute and fits well, although note that the material is a little cheap and only can handle a few wears. 

Sizes: 0-3 months to 12-18 months

Best Baby Princess Peach Costume

Super Mario Bros Infant Posh Princess Peach Costume

princess peach baby costume
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Why We Love It

You won’t need a trip to the Mushroom Kingdom to find this cute Princess Peach baby costume. The short-sleeve dress looks just like the one Peach wears, thanks to tulle lace details at the waist and underskirt. It also comes with a diaper cover and a hat with a soft attached crown. Your little one will look every inch the princess! Just add tights and a long-sleeve bodysuit underneath if you live in colder climes. 

Sizes: 6-12 months, 12-18 months

Best Baby Mario and Luigi Costume

Super Mario Baby Costume Bodysuit and Hat Set

super mario baby halloween costume
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Why We Love It

Itsa me, Mario! Your baby will be ready to rescue Princess Peach and battle Bowser in this adorable bodysuit, which looks just like a certain plumber’s famous overalls and cap. Choose from blue for a Mario-themed design or green for a Luigi-inspired version. The short-sleeve bodysuit has snaps at the crotch to make changing diapers a cinch. Parents love the details and report using it not only for Halloween but also for themed birthday parties and birth announcements. Just remember to layer up if it’s cold on Halloween. Some parents also note that it runs a bit big. 

Sizes: Newborn to 24 months

Best Baby Lion Costume

Spooktacular Creations Deluxe Baby Realistic Lion Costume Set

Baby lion halloween costume
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Why We Love It

No cowardly lions here! Featuring an adorable plush bodysuit complete with a tail and a headpiece with a lightweight mane. What's nice is that the booties are separate, so you can keep them off if your little one is still getting the hang of walking. It also has snaps on the legs for speedy diaper changes.

Sizes: 6-12 months to 5-7 years

Best Baby Bear Costume

Rubie's Oatmeal Bear Jumpsuit Costume

Baby Bear Halloween costume
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Why We Love It

Warning: The baby bear costume may result in some serious snuggles. The fleece jumpsuit is soft to the touch, resembling that of an actual teddy bear. A blue bowtie ups the adorable factor, while a headpiece completes the look. It even comes with a blanket to keep baby extra warm when you take them out on Halloween. 

Sizes: 6-12 months to 18-24 months

Best Baby "A League of Their Own" Costume

"A League of Their Own" Infant Dottie Costume

a league of their own dotty costume
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Why We Love It

Whether you’re a fan of the ‘90s movie or the streaming TV reboot, this adorable A League of Their Own baby costume is perfect for your little slugger. It comes with three pieces: a belted pink jersey knit dress, red socks and a red baseball cap. Sewn on patches make it clear what team baby is playing for, while printed-on buttons ensure there’s no small parts for your little one to choke on. Happy parents rave about how cute the costume is, and how accurately it is sized. However, some felt the dress was a little short.

Sizes: 0-3 months to 12-18 months 

Best Baby Witch Costume

Infant Crafty Little Witch Costume

Baby Witch Costume
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Why We Love It

For a cute take on the classic witch costume, look no further. This polyester baby witch dress comes with a matching hat and pants, so no need to buy extra items. One thing to note is that the shirt is attached to the dress, rather than a separate element so you can only put it on as one piece. Parents say it’s adorable and a good value, although many found the hat to be too small to stay on baby’s head.

Sizes: 6 to 24 months

Best Baby Dog Costume

Townhar Baby Dog Halloween Costume

baby dog costume
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Why We Love It

Your little one will be maximum cuteness in this adorable dog costume. This impossibly cute bodysuit is made of soft polyester, and has snapbutton closures for easy dressing. Although parents say it's super warm, it's roomy enough to add layers if you live in especially cold climates.

Sizes: 0 to 30 months

Best Baby Pumpkin Costume

Oneflow Pumpkin Costume

Pumpkin Halloween Costume
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Why We Love It

With their round little bellies, babies practically are pumpkins already! This Halloween costume comes with an adorable pumpkin hoodie and striped leggings. The whole set looks comfy enough that your little one might actually get more than five minutes of wear out of it. The zipper makes it incredibly easy to put on and take off, too. Parents say it’s warm and roomy enough to comfortably layer up underneath — ideal if the weather gets cold where you live.

Sizes: 0-6 months to 18-24 months

Best Baby Superhero Costume

Rubie's Wonder Woman Costume

baby halloween costumes
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Why We Love It

Show off how super your baby is in this super-cute Wonder Woman costume with a detachable cape. The zip-up onesie couldn’t be easier to get on and off, either. Make it a family affair and dress up the whole crew as superheroes. Parents say it runs big, so plan accordingly with your sizing. 

Sizes: 0 to 12 months

Best Baby Unicorn Costume

Spooktacular Creations Cute Lil' Baby Unicorn Costume

unicorn costume
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Why We Love It

Show off the mini unicorn you're raising in this colorful, cute ensemble. The costume includes a suit with a removable hood, booties and a magic wand for good measure. It’s super soft and will help keep your magical creature toasty and warm. Some parents say that their little ones didn’t love the hood, but otherwise most can’t get over how cute the costume is. 

Sizes: 6-12 months to 18-24 months

Best Storybook Baby Costume

Shalofer "Where the Wild Things Are" Costume

baby halloween costumes
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Why We Love It

For a low-key yet adorable costume, try this one inspired by the beloved children's book, Where the Wild Things Are. The cotton-blend, long-sleeved romper has convenient snaps along the legs, a removable tail and faux-fur lined crown. It also comes in a short-sleeve version for families in warmer climates. Parents say the adorable get-up is also very comfortable, although some people had trouble keeping the crown on their baby’s head for very long. 

Sizes: 6-12 months to 18-24 months

Best Baby Bee Costume

Posh Peanut Beatrice Bumble Bee Baby Costume

baby bee Halloween costume
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Why We Love It

Your little honey will create quite the buzz in this bee costume. The soft, striped jumpsuit comes with a detachable hood, and soft wings can be attached to the costume. The back zipper and inseam snaps will make diaper changes and getting dressed a bit more convenient, too. The cute stinger is on the tush, which means this isn’t the best choice if you’ll be driving or pushing your tot in a stroller.

Sizes: 0-3 months to 12-18 months

Best Simple Baby Costume

Simplee Kids Bunny Romper

baby bunny pajamas or halloween costume
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Why We Love It

Want to keep it simple this Halloween? This baby bunny bodysuit might be the perfect solution for your little one’s costume. These pajamas are zip-up (win!) and include adorable bunny ears on the hood, making this an easy get-up for Halloween or just hanging out at home. The cotton-blend romper has a plush lining and surface, meaning your baby will be plenty comfy while wearing it.

Sizes: 0-3 months to 2T-3T 

Best Dinosaur-Themed Costume

Pottery Barn Kids Baby Green Dinosaur Egg Halloween Costume

baby dinosaur egg costume
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pottery_barn_kids
pottery barn kids
$69
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Why We Love It

How hilariously cute is this dinosaur egg costume? Your little one will be the sweetest baby dino in this costume from Pottery Barn Kids. It comes with a headpiece and jumpsuit and is fully lined, meaning it'll be gentle on baby's sensitive skin. It's certainly on the more expensive side for a baby costume, but its high quality design means that you can likely pass it down to your future kiddos.

Sizes: 0-6 months to 12-24 months

Best Baby Tiger Costume

Old Navy Unisex Tiger Costume Hooded One-Piece for Baby

Old Navy tiger hooded onesie for baby
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Why We Love It

Roar! This tiger costume is built for baby, thanks to hidden snaps on the inseam (read: any mid-trick-or-treat diaper changes will be fairly easy!). It's also machine washable for easy cleaning, and provides an adorable Halloween look without too much effort. The furry hood has tiger ears and tiny fangs to keep your kiddo warm while still looking the part. Just add a pair of black tights or leggings and you’re good to go. Plus, you can find kid- and adult-sized versions of the same costume so the whole fam can be on theme!

Sizes: 0-3 months to 18-24 months

Best Vampire Baby Costume

Princess Paradise Infant Little Vlad The Vampire Costume

baby halloween costumes
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Why We Love It

“I vant to drink some milk!” This vampire costume comes with a velvet red-lined cape, a matching red vest, a collared shirt and coordinating black pants. It’s the perfect little addition for the group dressing up as the Addams Family. Just note that it’s not ideal for bigger babies, as it’s only available in sizes up to 6 months. 

Sizes: 0 to 6 months

Best Baby Ghostbusters Costume

Ghostbusters Dress Infant Costume

Baby Ghostbusters pullover dress costume
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Why We Love It

This Ghostbusters baby costume is perfect for Halloween. A zipper down the front is not only on-theme, but helpful for getting it on and off. This sweet dress comes with a special headband and four name tags to complete the look. However, note that some parents say the sizing is a little small, and the fabric isn’t the best quality considering the price.

Sizes: 0-3 months to 12-18 months

Best Baby Shark Costume

Rubie's Baby Shark Costume

baby shark halloween costume
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Why We Love It

Your little one is sure to love this Baby Shark costume, complete with a sound chip of the song that’s probably stuck in your head at this very moment. (Don’t worry, it has an off switch.) It’s a pull-on closure with a zipper on the side, and has plenty of room for warmer layers underneath. (Good thing too, because some parents say the fabric is a little itchy.)

Sizes: 6 months to 4 years

Best Baby Astronaut Costume

Spooktacular Creations Baby Astronaut Costume

baby astronaut halloween costume
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Why We Love It

Make baby’s Halloween out of this world with this adorable astronaut suit. This costume has snaps along the inseam that make for quick diaper changes and grippy socks to help them walk on the moon (or, you know, around the house). Some parents say the costume can be see-through, so you may want to pair with a regular onesie. Others recommend wearing real shoes instead of booties when going outdoors, since they’re fairly flimsy.

Sizes: 6 months to 4 years

Best Baby "Monsters Inc." Costume

Disney Monsters Inc. Baby Bodysuit with Hat

Why We Love It

This adorable Mike Wazowski baby costume is sure to be one of the cutest on your Instagram feed. Not only is this get-up adorable, it’s also built with a three-snap closure and lap shoulders, making it easy to put on and take off for changes. Because it’s so simple, you can layer pants or a little jacket on top if the weather calls for it. What’s more, it comes with a tiny cap to complete the look.

Sizes: 0 to 24 months

Best Baby Monster Costume

Lil' Pink Monster Costume

baby pink monster halloween costume
Buying Option
HalloweenCostumes.com
HalloweenCostumes.com
$55
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Why We Love It

This costume is the definition of snuggly. What’s not to love about a fuzzy pink monster costume with the cutest eyes, horns and paws? It has a tush flap with snap closure to make diaper changes frighteningly easy. It comes with other convenient features too, like a removable hood, a zipper up the back and separate foot covers. Parents say it’s roomy and warm, ideal for chilly Halloween evenings.

Sizes: 0 to 3T

Best Baby Elvis Costume

Rubie's Baby Elvis Costume

baby Elvis Halloween costume
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Why We Love It

You’ll be saying “Thank you, thank you very much,” to this baby Elvis costume. Dress your little one up as “The King” with this Halloween costume, which includes a shiny onesie and pants, plus matching booties and a special hat. Reviewers praised how soft and high-quality the fabric is, too. Order a size up if you’re not sure which to go with.

Sizes: 0 to 12 months

Best Baby Butterfly Costume

Monarch Butterfly Onesie for Infants

Baby Butterfly Costume
Buying Option
HalloweenCostumes.com
HalloweenCostumes.com
$40
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Why We Love It

There's only one word to describe this butterfly costume: adorable. The plush bodysuit includes an attached hood with sweet eye and antennae details, plus a detachable set of plush wings in case your baby finds them constraining.The legs have stretchy elastic to fit comfortably over chubby baby thighs, and the snap button closure lets you change diapers without changing costumes completely. Pair with black pants to complete the cute look. 

Sizes: 0-3 months to 12-18 months

Best Baby Dragon Costume

California Costumes Dragon Costume

Dragon Halloween Costume
Buying Option
Why We Love It

Got a dragon-loving little one? Look no further than this sweet baby Halloween costume. The hood, tail and hand and feet coverings are attached to the jumpsuit, and the wings detach. It conveniently has snaps along the inseam for easier diaper changes or trips to the potty. Parents say that the costume is cute and surprisingly convincing, and that it’s fairly roomy inside. Some just wished the feet also detached because they get pretty dirty quickly if you have a little walker wearing the costume. 

Sizes: 18 to 24 months

Best Baby Firefighter Costume

Paddy Field Firefighter Costume Bodysuit

Paddy Field Firefighter Costume Bodysuit
Buying Option
Why We Love It

Future firefighter, coming through! This outfit — a traditional long-sleeve bodysuit with leg snaps — couldn’t be easier to get on and off. If you’re planning a longer outing, this no-frills outfit is a cute and comfy choice that your baby will happily wear for hours. Parents note that the fabric is a little thin, so layer up accordingly if you live somewhere colder.

Sizes: 0-3 months to 12-18 months 

Our Research

We canvassed What to Expect community boards and retailer reviews to learn what baby Halloween costumes have used and loved for their babies, and to get a sense of what features parents prioritize in costumes.