For a baby, the best costume is one they don't notice they're wearing. Every look below starts from soft clothes most families already have, a sleeper, a romper or a bodysuit, and adds flat felt details plus one removable headpiece. You'll find classic fall characters, cuddly animals, a few silly foods and some easy DIY builds, all comfortable enough for photos, a family party, a stroller walk or a short round of trick-or-treating. My rules for every one are simple. Use breathable fabric, keep the snaps working for diaper changes, put nothing near the face that can't come off in a second, and keep props in an adult's hands. Most of them also layer over warm pajamas when October turns cold.
Sewing Felt Details Onto a Sleeper That Still Gets Washed
Nearly every costume below is a plain sleeper or romper with felt shapes added, so the real skill is attaching those shapes in a way that survives a baby. Babies chew, pull and spit up, and the costume will go through the wash at least once before Halloween night is over.
- Buy or borrow the base one size up. It leaves room for a warm layer underneath and for the stiffness felt adds.
- Wash and dry the base and the felt before cutting. Felt can shrink a little, and a shape that shrinks after sewing puckers the whole front.
- Cut shapes with rounded corners. Sharp corners are the first thing little fingers find and lift.
- Stitch around every edge by hand or with a narrow zigzag. Fabric glue and hot glue both let go in the wash, and loose felt becomes something to mouth.
- Put larger add-ons like tails, shells or collars on snaps so they come off without unpicking anything.
- Finish with a tug test: pull each piece hard in every direction. If it moves, sew it again.
Before cutting, check where the snaps or zip run. Diaper access matters more than any detail, so keep felt clear of the leg snaps and the zip line.
1. Baby Pumpkin Costume With Green Hat
The pumpkin is the first-Halloween classic, and the easiest to get right. Start with a soft orange romper, footed sleeper or cotton bodysuit over matching leggings, then add a jack-o'-lantern face cut from black felt. I stitch the felt all the way around its edges rather than gluing it. Babies mouth everything, and glued felt starts lifting at the corners after one wash. A stretchy green cap with a short felt stem sits above the brows, well clear of the eyes. Orange socks or soft green booties finish it, and a plush pumpkin stays beside the baby in pictures rather than in their hands.
2. Baby Ghost Costume With White Sleeper
A sheet ghost is a bad idea for a baby, but a white sleeper does the same job with none of the risk. Choose a plain white footed sleeper with snaps or a zip down the front so diaper changes stay quick, then sew on two big black felt ovals and a small smiling mouth, all lying flat. A lightweight white cotton cap with a soft knotted tip gives the ghost its rounded top, and the face stays bare. White socks or soft crib shoes keep it all one color. It's my favorite last-minute baby costume, because the base is already sitting in the pajama drawer.
3. Baby Black Cat Costume With Soft Tail
Black basics turn into a cat with nothing more than ears and a tail. Use a long-sleeve black bodysuit with black leggings, or a black footed pajama, and sew a short stuffed tail to the back. Where that tail sits matters. Too low and the baby sits on a lump; too high and it presses into a carrier strap. I pin it, sit the baby down for a minute, then sew it where it stays out of the way. A stretchy cap with rounded felt ears and pink centers finishes the head, and whiskers aren't needed at this age. Black socks or paw-print booties, and it pairs easily with a parent dressed as a witch.
4. Baby Bat Costume With Fabric Wings
Wings are where baby costumes most often go wrong, so I keep the bat's short. Build it on a black cotton romper with matching tights, then add scalloped wings across the arms and back, cut short enough that they can't wrap around the baby or catch under crawling hands. Make them from soft fleece or cotton jersey, never stiff felt with wire inside. A black knit cap with small rounded ears gives the bat shape and keeps the face open. Soft black booties that look like tiny feet rather than claws finish it, and a plush crescent moon makes a sweet picture prop.
5. Baby Witch Costume With Purple Tutu
A baby witch can be bright instead of dark, and purple does that nicely. Start with a black cotton bodysuit and purple-and-black striped leggings, then add a short tulle tutu at the waist. Tulle feels scratchy on bare skin, so I bind the waistband with a strip of soft jersey and keep the leggings on underneath. The mini witch hat sits on a wide, soft headband that comes off the moment the baby fusses, and most babies do fuss at a headband. Black socks or purple booties and a plush star wand instead of a broom. It suits an indoor party or a stroller ride and matches a parent or sibling witch.
6. Baby Bumblebee Costume With Soft Wings
Yellow and black stripes say bee to anyone, even across a crowded room. Use a striped cotton romper, or a yellow bodysuit with black leggings and flat felt stripes sewn across the middle. Felt stripes on a stretchy bodysuit pucker if you stitch them on with the fabric relaxed, so I stretch the bodysuit slightly while sewing to give the stripes some give. Two small flexible wings sit high on the back, above where the baby sits. A stretchy cap with short padded antennae replaces any face paint. Yellow socks or black crib shoes and a plush flower round it out for a baby who'll spend the night in a stroller or someone's arms.
7. Baby Ladybug Costume With Red Wings
The ladybug is the bee's red cousin and uses the same build. Start with a red long-sleeve romper and black leggings, or a footed red sleeper for a newborn. Flat black felt circles go across the torso, and small red wings with matching spots go on the back, short and flexible enough for comfortable sitting. A soft black cap with tiny rounded antennae frames the face. Red is the one color I'd always test for dye bleed, so wash a new red romper on its own before any felt goes on. Black socks or red crib shoes and a plush leaf finish it, and it slips under a jacket for an outdoor evening.
8. Baby Sunflower Costume With Green Romper
A sunflower makes a cheerful break from orange and black. Dress the baby in a green cotton romper, leggings or a cozy footed sleeper, then add a removable yellow felt petal collar. The collar needs a careful fit: loose enough to be comfortable, close enough that it can't ride up toward the face when the baby leans back. I attach mine with a couple of snaps so it comes off in one pull. A green cap with lightweight yellow petals forms the flower's center, with no glitter anywhere. Green socks or brown booties suggest the stem, and a plush watering can shows up well against a plain background.
9. Baby Mushroom Costume With Spotted Hat
A mushroom looks sweetest on a sitting or crawling baby, because the round red cap sits on top just like the real thing. Start with a cream cotton romper or white footed pajamas, with tan leggings underneath if it's cold. The cap is a lightweight red fabric hat with white felt circles stitched on. Keep any brim short. A wide floppy brim drops over a baby's eyes the moment they look down, so I either stiffen it slightly or leave it off. Red socks or soft brown booties finish the woodland palette, and everything apart from the hat goes on being normal clothing afterward.
10. Baby Dinosaur Costume With Green Spikes
A dinosaur gives active crawlers plenty of room, since the whole costume is a green hooded romper or soft footed sleeper. Padded felt spikes run down the hood and back, stopping above the diaper area so sitting stays comfortable. Stuff the spikes only lightly with fiberfill; overstuffed spikes turn firm and dig into the baby's back when they lie down. A short flexible tail is optional. The hood replaces a wig, and felt eyebrows or nostrils on the hood give it a face without paint. Green socks or non-slip dinosaur-foot booties and a plush egg finish it, and it's warm enough for a cool stroller walk.
11. Baby Dragon Costume With Blue Wings
The dragon is the dinosaur's fancier sibling. Start from a hooded blue sleeper, add a row of soft silver or teal felt scales along the hood and back, then attach small fabric wings high on the shoulders so the baby can still lie down. Metallic felt tends to be stiff and scratchy, so I keep it to the outer layer and back it with soft cotton wherever it might touch skin. A short padded tail finishes the romper, and sewn fabric details give the hood a friendly expression. Blue socks or soft booties with flat felt toes, and a plush cloud placed beside the baby for photos.
12. Baby Lion Costume With Fleece Mane
The lion is the warmest costume here, which makes it my pick for a properly cold evening. Begin with a tan or golden footed sleeper that still opens easily for diapers. The mane is short strips of brown and golden fleece sewn around a soft bonnet. Fleece doesn't fray, so the strips can be cut and left raw, and I prefer it to faux fur, which sheds fibers onto little hands and mouths. Keep the strips short so they stay clear of the eyes. A short padded tail and tan paw booties finish it, and the lion slots straight into a family safari or storybook theme.
13. Baby Bunny Costume With Floppy Ears
A bunny is the gentlest costume on the list. Dress the baby in a white, gray or pale brown footed sleeper, then add a fuzzy belly panel in a baby-safe fabric and a small tail. Yarn pom-poms come apart when chewed, so I make the tail from a stuffed fabric circle, or stitch several times through the center of a pom-pom to lock it. A stretchy bonnet with floppy fabric ears gives the bunny shape and leaves the face uncovered. White socks or flexible paw booties, and a plush carrot nearby rather than anything the baby will gnaw. It adapts easily from newborn to crawler.
14. Baby Lamb Costume With Curly Bonnet
Lambs and babies are a natural match, and the bonnet is where the lamb happens. Use a white cotton sleeper as the base with a sleeveless fleece vest over it, choosing a low-pile fleece or soft minky rather than long faux fur that sheds. A white bonnet covered with small fabric curls and two floppy gray ears goes on top. Many bonnet patterns tie under the chin; I replace the ties with a snap tab, because strings near a baby's neck are a strangulation risk. Black leggings and soft black booties make the lamb legs. It's warm for an October outing and quick to strip off for a feed or a nap.
15. Baby Cow Costume With Spotted Romper
A cow uses black-and-white clothing that most families can find. Start with a white footed romper and sew on black felt patches in irregular shapes. Neat round spots read as a dalmatian, so cut the patches lopsided on purpose. A pale pink oval on the belly adds the cartoon detail. A stretchy white cap with small black ears and short padded horns finishes the head without covering the face. Black socks or hoof-style booties, and a plush milk bottle or small fabric hay bale for pictures. It's easy for a baby who'll be carried, and it fits a farm theme with a parent as the farmer.
16. Baby Penguin Costume With Orange Booties
A penguin keeps a baby warm because it is, more or less, a fleece suit. Pick a black hooded sleeper and attach a white oval belly panel to the front. A small padded orange beak sits on the top edge of the hood; keep it small and lightly stuffed so its weight doesn't tip the hood forward over the eyes. Flat black flippers sewn along the sleeves let the arms move freely. Soft orange booties shaped like simple webbed feet finish it, with a plush snowball for photos. In a chilly climate this is the one I'd choose, since it looks a lot like regular fleece outerwear.
17. Baby Owl Costume With Feathered Wings
Layered felt makes owl feathers without a single loose feather to swallow. Dress the baby in a brown, cream or rust cotton romper with matching leggings, then sew overlapping rows of rounded felt pieces onto a lightweight vest. I start the rows at the bottom and work upward, so each row hides the stitching of the one below and no edge is left loose to pick at. Short fabric wings along the arms keep the hands free. A soft bonnet with big fabric eyes and tiny ear tufts finishes the head. Brown socks and claw-free booties complete the most detailed build on this list, with every piece still flat and soft.
18. Baby Fox Costume With Orange Tail
A rust-orange sleeper is most of a fox already. Add a cream belly panel and dark brown fabric cuffs for the fox's coloring, then a short padded orange tail with a white tip, placed above the sitting area. The orange bonnet with pointed ears needs a little structure to keep the ears upright, and a layer of fusible interfacing inside each ear does it without adding anything hard. Skip the whiskers and nose paint. Brown socks or orange paw booties finish it, plus a plush acorn or fabric leaf for pictures, and the fox sits nicely beside other woodland animals in a family group.
19. Baby Skunk Costume With White Stripe
The skunk is the funny one, and it's built from everyday black pajamas. Choose a black hooded romper with plenty of room, then sew a wide white fleece stripe from the top of the hood down the back, stopping before the diaper opening. On a stretchy romper, sew that stripe with a zigzag stitch so the seam stretches with the fabric instead of popping. Add small rounded ears and a short, fluffy black-and-white tail kept clear of where the baby sits. The hood does the work, so no painted nose is needed. Black socks or paw booties and a plush flower bring a bit of color to the photos.
20. Baby Snail Costume With Plush Shell
A snail is made for a crawling baby, since the shell rides on their back as they go. Start with a beige, pale green or brown romper with matching leggings, then make a lightweight spiral shell from padded fabric and fix it across the upper back. I attach the shell with wide snaps so it comes off completely, because it has to go whenever the baby is in a car seat, a carrier, a crib or lying on their back. A stretchy cap with two short soft antennae is safer than a rigid headband. Brown socks or green booties finish it, and a plush mushroom can sit nearby for pictures.
21. Baby Astronaut Costume With Silver Booties
A baby astronaut feels adventurous and stays comfortable. Choose a white zip-front romper and add flat silver fabric panels at the shoulders, knees and cuffs, plus felt patches with simple stars or a rocket and no brand names. Metallic fabric frays quickly at cut edges, so turn the edges under or choose a silver fabric with a knit backing. A soft white cap or fabric helmet hood frames the face with no visor. Silver booties and a plush planet finish it. Leave off any backpack while the baby is sitting or being carried, and slip thermal pajamas underneath on a cold night.
22. Baby Firefighter Costume With Soft Hat
A firefighter can look official without any heavy gear. Start with a navy or black cotton romper and add bright yellow fabric strips at the sleeves, chest and legs. Use soft yellow cotton or jersey for the strips; real reflective tape is stiff and its cut edges scratch. A soft red cap shaped like a fire helmet leaves the face open, and the baby's hair stays as it is. Black socks or flexible booties that suggest work boots, plus a small plush fire truck, make the theme clear. The base stays close to ordinary clothing, so it's comfortable for a sitting baby and fits a family group of community helpers.
23. Baby Chef Costume With Checkered Pants
A chef costume starts with a white bodysuit and soft black-and-white checkered pants. Add a lightweight double-breasted panel to the front with stitched felt circles standing in for buttons. Real buttons are a choking hazard at this age, and I never sew them onto a baby costume. The puffy cotton chef hat is the defining piece, and it should be soft enough to squash flat and sit well clear of the eyes. White socks or black crib shoes and a plush spoon or fabric cupcake finish it. Take the hat and prop off whenever the baby is feeding, sleeping or riding in the car seat.
24. Baby Scarecrow Costume With Patchwork Overalls
A scarecrow brings autumn farm colors into very soft clothes. Layer denim-look overalls over a plaid cotton bodysuit, then sew felt patches at the knees and pockets. Skip real straw, which is sharp and sheds everywhere. Short strips of yellow fleece poking out at the cuffs read as straw and stay put. A floppy fabric hat with one small patch and a soft sunflower tops it off, and the face needs no stitched details at all. Brown socks or booties and a plush crow or fabric pumpkin for photos. It's an easy match for a parent dressed as the farmer at a harvest party.
25. Baby Strawberry Costume With Leaf Cap
A bright red romper becomes a strawberry with very little sewing. Small yellow felt seeds go across the front and back, each one stitched all the way around so it lies flat and can't be picked off by curious fingers. A soft green leaf collar or shoulder panel sits well below the chin. A stretchy green cap with a few rounded fabric leaves forms the top of the fruit while the face stays visible. Red socks or green booties finish it, and a plush berry basket can sit nearby in photos. It suits a newborn and pairs well with siblings dressed as other fruits.
26. Baby Avocado Costume With Brown Belly
The avocado is the quickest DIY food costume on this list. On a green footed sleeper, add a large pale-green felt oval to the front and a soft brown circle over the belly for the pit. A thin layer of batting behind the pit makes it look round, but keep it soft enough that the baby can still lie on their tummy. A stretchy green cap with a tiny felt stem finishes the top. Green socks or darker green booties keep the color story simple, and a plush lime makes a fun photo companion. It suits a newborn who'll spend most of the evening being held or napping.
27. Baby Sushi Costume With Rice Wrap
A sushi roll builds nicely on a white cotton sleeper, which plays the rice. A wide, soft black fabric band goes around the torso as the seaweed, sewn or snapped to the sleeper rather than tied around the baby, since a tied band can tighten as they wriggle. A lightweight orange fabric panel across the upper body suggests the topping, and a white cap with tiny black felt dots matches the base. Black socks or white booties, and a plush ginger slice for pictures. Before you head out, check that the band stays loose enough for easy breathing, sitting and quick diaper changes.
28. Baby Popcorn Costume With Striped Romper
Popcorn is a fun choice for movie-loving families. Dress the baby in a red-and-white striped romper, or a striped bodysuit with red leggings, and add a plain white felt label to the front with no brand name. The popcorn itself is small fabric puffs sewn around a soft white cap. I make each puff from a circle of fabric gathered with a running stitch and stuffed lightly, then stitch it down firmly so it can't be pulled away. Keep them off the edge of the cap, away from the eyes and mouth. Red socks or white booties and a plush movie ticket finish it, and parents can join in as moviegoers.
29. Baby Garden Gnome Costume With Red Hat
A garden gnome is mostly about the hat. Start with a blue or green cotton tunic-style romper over soft brown leggings, with a wide fabric belt sewn straight onto the garment instead of a buckle. Stuff the tall red hat lightly so it stands up without weighing much; a heavy hat tugs at a baby's head and slides down over the eyes. A short white fabric beard attaches at the romper's neckline, below the chin, never around the face. Brown booties finish the woodland outfit, and a plush mushroom or watering can sits nearby for an outdoor fall photo.
30. Baby Little Monster Costume With Colorful Spots
The little monster is silly rather than scary, and it's the best use of a fabric scrap bin. Choose a turquoise, purple or lime-green hooded romper and sew contrasting felt spots all over it. Add a soft belly panel, rounded ears and a few short fabric spikes along the hood. One or two big felt eyes go on top of the hood, so the baby's own face stays uncovered. Since there's no character to match, an older sibling can pick the colors, and they usually feel very proud of the result. Matching socks or booties with flat felt toes and a plush star finish it.
Car Seats, Carriers and a Warm Baby
Most first Halloweens involve a drive to a family party, which is where costumes cause the most trouble. Harness straps need to sit snug against the baby's body, and puffy layers, padded shells and stuffed tails underneath leave the straps too loose to hold. Take off the bulky pieces before buckling in, then lay a blanket or the costume vest over the harness once the straps are tight.
Carriers have the same issue on a smaller scale. A tail, a shell or wings on the back get squashed between the baby and your chest, so take them off for carrying and put them back for photos.
Too hot, too cold
Fleece costumes like the lion, penguin and dinosaur get very warm indoors, and babies can't take off a layer themselves. I feel the back of the neck every so often. Sweaty means a layer comes off, and cool hands alone are normal. Hats and headpieces come off for every nap, without exception. Outdoors, put warm pajamas under a cotton costume rather than a bulky coat over it, so the costume still shows.
Soft Beats Fancy for a First Halloween
The sweetest baby costumes are built on clothes a little one can actually wear. Soft sleepers, cotton rompers, stretchy hats and flat felt details keep every look above easy through photos, parties and family outings. Give each attached piece a firm tug before the day, keep props in grown-up hands, and take off anything bulky before the crib, the carrier, a stroller harness or the car seat. Let the baby wear the costume for a short while a few days early, too. If they hate the hat or the wings, the decorated base still tells everyone what they are.
Related posts:
