Best Baby Halloween Costumes 2026: 5 First-Halloween Picks for 0–12 Months

Best baby Halloween costumes for 2026 at a glance

A first-Halloween costume has a different job from a toddler costume. A baby isn't walking a trick-or-treat route, choosing a character, or wearing a mask. They're being held, worn in a carrier, passed around at a party, or sitting in a stroller while an older sibling does the running. So the qualities that matter are warmth without overheating, easy diaper access, nothing loose near the face, and a costume you can get off fast when the evening ends in a nap. If your child is already walking and has opinions about Elsa, you want our toddler Halloween costume picks instead.

Who each costume is for, and who should skip it

Rubie's Baby Bunting Pumpkin Costume

The simplest first-Halloween costume there is: an orange bunting with a jack-o'-lantern face, a green leaf at the neckline, and a pumpkin headpiece with a curly stem. The listing gives a length of about 24 to 28 inches and a fit of newborn to 9 months, closing with a fabric fastener. A bunting is a sack at the bottom rather than two legs, which suits a baby who is being carried or sitting in a stroller.

• Who it's for: newborns and young babies who aren't crawling yet, families doing a pumpkin-patch photo, and siblings doing a pumpkin theme.
• Skip it if: your baby is crawling or pulling up. A bunting traps the legs, and an active 8-month-old will fight it.
• Check before Halloween: the listing says the headpiece fastens under the chin. Take it off before any nap and before baby is out of your sight. Nothing tied under a baby's chin should stay on during sleep.

Check price on AmazonRubie's Baby Bunting Pumpkin Costume

Rubie's Scooby-Doo Bunting with Headpiece

A licensed character with no mask: a brown fleece bunting with Scooby's green collar and a matching headpiece, sold in Infant 6–12 months. Rubie's own listing says its costumes run smaller than regular clothes and points to the size chart. Fleece makes it a warm choice for an October evening outdoors.

• Who it's for: a 6- to 12-month-old in a cold climate, a family Scooby-Doo theme, and parents who want a recognizable character in photos.
• Skip it if: you'll be indoors at a warm party most of the night. Fleece plus a headpiece can overheat a baby quickly.
• Check before Halloween: size by your baby's length, and check the back of the neck and chest for sweat after 20 minutes in it. The AAP lists sweating, a hot chest, and flushed skin as signs of overheating.

Check price on AmazonRubie's Scooby-Doo Bunting with Headpiece

HKYFNNBW Halloween Baby Lobster Romper

A red hooded lobster romper in soft polyester. The listing describes a zipper closure for diaper changes. The ASIN we link is the 0–6 month size. The same costume is also sold in 6–12 months, 12–18 months, and 18 months–2 years.

• Who it's for: a baby in the 0–6 month size, a family animal theme, and parents who want a zipper for diaper changes.
• Skip it if: your baby is past 0–6 months and you have not switched to one of the larger sizes on the listing (6–12 months, 12–18 months, or 18 months–2 years).
• Check before Halloween: it is a hooded romper, so take it off before sleep, and confirm the live page is the red lobster in 0–6 months.

Check today's price on the Rubie's pumpkin buntingAffiliate link. Classic first-Halloween bunting, newborn to 9 months per the listing.

Disguise Monsters University Mike Infant Costume

The Disney Pixar Mike costume from Disguise, sold in 6–12 months. The listing says it includes a jumpsuit, a foam character overlay, a hat with the Monsters University logo, and a pair of booties. It's officially licensed. A matching Sulley costume is sold separately, which makes it a common pick for twins or for a baby and an older sibling.

• Who it's for: a 6- to 12-month-old in a sibling or family theme, and parents who want a costume with legs rather than a bunting.
• Skip it if: your baby hates hats. The look depends partly on the hat, and a hat should come off indoors anyway.
• Check before Halloween: the foam overlay adds bulk at the front. That's fine in arms or a stroller, but take it off before buckling into a car seat.

Check price on AmazonDisguise Monsters University Mike Infant Costume

Simple Joys by Carter's Baby 2-Pack Halloween Sleep and Play

The no-costume costume. Two footed one-pieces with Halloween prints, snap closures, and covered feet, per the listing. Some babies won't tolerate a hood, a tail, or a headpiece for more than five minutes, and some parents don't want to buy a single-use outfit for a baby who will outgrow it by Thanksgiving. A printed sleep-and-play gets you the photo and stays useful through the fall.

• Who it's for: babies who scream at costumes, daycare Halloween days, and a second outfit for after the photo.
• Skip it if: you want a full character look. It's a printed one-piece, not a costume.
• Check before Halloween: if you use it as pajamas, follow normal safe-sleep rules: a fitted sleeper or wearable blanket, no loose blankets, and no hat. Our guide to baby sleep sacks and wearable blankets covers that layer.

Check price on AmazonSimple Joys by Carter's Halloween Sleep and Play (2-Pack)

How we picked

We started from what a baby actually does on Halloween: gets held, worn, wheeled, fed, changed, and put down for a nap somewhere unexpected. Then we looked for real, currently listed costumes from established costume and baby-clothing brands that covered the five common approaches: a bunting, a licensed bunting, a jumpsuit with diaper access, a licensed jumpsuit for sibling themes, and a printed one-piece for babies who won't wear a costume. Every fact in the table comes from the Amazon listing. The lobster romper was rechecked through the Amazon Creators API on October 28, 2026. The other four costumes were pulled on October 21, 2026. Costume lines get restocked and resized every season, so the checks in the next sections apply to whatever costume you end up buying.

When the costume meets nap time

This is the part of baby Halloween that toddler guides skip. A baby in a costume will probably fall asleep in it at some point: in a carrier, in the stroller, on a grandparent's shoulder. That's normal. What matters is what happens when you put them down. The AAP's safe-sleep guidance says babies need only one more layer than an adult would wear in the same room, and lists sweating, a hot chest, and flushed skin as signs of overheating. It also says not to put a hat on a baby indoors once you're home from the hospital.

• ✓Take off the hood, headpiece, or hat before putting baby down to sleep.
• ✓Remove bulky outer pieces like foam overlays, plush tails, and buntings over regular clothes if the room is warm.
• ✓Put baby down on their back, on a firm flat surface, with nothing loose in the sleep space. A costume prop or stuffed accessory doesn't belong in the crib.
• ✓Never let a baby sleep in a car seat, swing, or carrier after you've arrived. Move them to a flat sleep surface.

Car seats: buckle first, costume second

If you're driving to a party or to grandma's house, the costume question becomes a car-seat question. The AAP says bulky clothing, including winter coats and snowsuits, should not be worn under a car-seat harness. In a crash, the fluffy padding flattens, leaving extra space under the straps, and a child can slip through. Plush buntings, foam overlays, and stuffed tails create exactly that kind of bulk.

The workable approach: buckle your baby into the seat in regular clothes with the harness snug, then lay the costume over the top like a blanket for the ride, or change into the costume when you arrive. The AAP's winter tips also suggest keeping the infant seat's carrier inside the house so it starts at room temperature. Our infant car seat guide covers harness fit in more detail.

Fabric, flammability, and the jack-o'-lantern problem

Parents often look for a "flame resistant" label on baby costumes and don't find one. Here's part of why. CPSC's children's sleepwear flammability standards exempt "infant garments": items sized 9 months or smaller that also meet length limits (25.75 inches for a one-piece) and the general clothing flammability standard. Those are sleepwear rules, and a Halloween costume isn't sleepwear. But the takeaway for parents is the same either way. A label is no substitute for keeping a baby away from open flames.

The AAP's Halloween guidance says to look for "flame resistant" on costume labels and suggests a battery-operated flameless candle, flashlight, or glow stick instead of a candle in jack-o'-lanterns. With a baby in the house, that advice gets more important. Babies get held close to porch steps, fire pits at backyard parties, and tables with candles. Use LED candles in pumpkins, keep the stroller back from any fire pit, and don't let a dangling tail or hood swing over a lit display.

What changes from newborn to 12 months

• 0–3 months: you'll mostly be holding them. Buntings and soft one-pieces work best. Skip anything with hard pieces or small attached decorations that could come loose near the face. Keep the outing short and warm.
• 4–6 months: babies start grabbing everything, including their own hood and anything dangling. Check that attached pieces like claws, ears, and stems are sewn on firmly and can't be pulled off and mouthed.
• 7–9 months: sitting and starting to crawl. A bunting will frustrate a crawler. Choose a jumpsuit with legs, or plan on a short photo session in the bunting and then a change.
• 10–12 months: some babies are pulling up or cruising. Grippy feet or real soft shoes beat slippery costume booties on hard floors. By now a baby may hate hats; a printed one-piece or a hood that folds back easily saves a meltdown.

Sizing, returns, and how many outfits to buy

Size by your baby's length and weight on the brand's chart, not the age on the tag. Rubie's says its costumes run smaller than regular clothes, and its pumpkin bunting lists a 24–28 inch length for newborn to 9 months. If your baby is near the top of a size range in October, size up. You can roll a sleeve, but you can't add room in the shoulders.

Plan on one costume and one backup outfit. Diaper blowouts and spit-up don't take Halloween off. A printed sleep-and-play is a cheap backup that still looks festive in the second round of photos. Check the return window before you open the package, since baby sizes and character preferences (your own, at this age) can change between ordering and October 31.

Dressing a whole family? Our family matching Halloween costume guide covers themes that include a baby, and our kids' Halloween costume picks cover older siblings ages 4 to 10.

Check current prices on the five picks

Check Rubie's Baby Bunting Pumpkin Costume on AmazonAffiliate link. Bunting with headpiece; newborn to 9 months per the listing.

Check Rubie's Scooby-Doo Baby Bunting on AmazonAffiliate link. Fleece bunting with headpiece; Infant 6–12 months.

Check HKYFNNBW Halloween Baby Lobster Romper on AmazonAffiliate link. Linked size 0–6 months; also sold in 6–12 months, 12–18 months, and 18 months–2 years.

Check Disguise Monsters University Mike Infant Costume on AmazonAffiliate link. 6–12 months; jumpsuit, overlay, hat, and booties.

Check Simple Joys by Carter's Halloween Sleep and Play 2-Pack on AmazonAffiliate link. Two printed footed one-pieces; pick the size on the listing.