A paired costume turns two separate Halloween plans into one shared game, and siblings usually enjoy being half of a joke more than they expect. Below are thirty brother and sister pairs: characters they'll know, opposites like a shark and a lifeguard, food duos, and storybook couples. Each one has both outfits worked out, from clothes and hair to makeup, props and shoes. Most can be built from things already in the wardrobe, plus some felt, cardboard and a few cheap pieces. When I plan these with families, the kids pick the theme together, so neither one feels stuck with the role nobody wanted. And for trick-or-treating, I keep to light props, layers that come off, something reflective and shoes they've already worn.
When a Six-Year-Old and a Toddler Share One Theme
Most of these pairs assume two kids who can both walk a whole street, but siblings are often years apart. I plan the costume around the younger child first, then give the older one the role with more detail to show off. Toddlers do best in soft, one-piece outfits: a hoodie and joggers with felt added, nothing on the head they can't pull off themselves, and no small pieces glued on that could come loose and end up in a mouth.
- Give the older child the prop-heavy role, such as the beekeeper, the chef or the paleontologist.
- Put the younger child in the soft animal or object role: the bee, the cupcake, the dinosaur.
- Let a baby in a carrier or pram wear just the colours and a hat; the older sibling carries the theme.
- Avoid pairs where the younger child's half depends on a rigid panel they'll refuse to wear.
If the kids can't agree, give each one a veto, then let them pick together from what's left. A child who chose their role wears it all night without complaint. A child who was assigned one tends to take it off by the third house.
1. Mario And Princess Peach Costume
Mario and Peach use big, flat primary colours, which is why they read so well in photos. For him: blue overalls over a red long-sleeve top, white gloves, brown shoes and a red cap with a felt M stitched on (glued felt peels off a cap within an hour). A mustache in skin-safe face paint rather than a stick-on one, because adhesive mustaches itch and get pulled off by the second house. For her: a pink puff-sleeve dress, white gloves, flat pink shoes and a light gold crown, with hair in soft curls or a long blond wig if she wants one. A plush mushroom or a cardboard gold coin each. Thermal tops and leggings fit under both if it's cold.
2. Peter Pan And Tinker Bell Costume
Peter Pan and Tinker Bell are the green pair, and they're easy to make at home. Peter gets a green tunic, brown belt, green leggings, soft brown boots and a pointed felt cap; leave his hair a bit messy and add a little rosy colour to his cheeks. Tink wears a green dress over matching tights, glittery flats and see-through wings on soft elastic straps. Check those straps under her arms after ten minutes of running, since that's where they rub. A high bun suits her. Peter carries a rolled paper map and Tink a star wand. Use only cosmetic-grade glitter, and keep it to the cheeks, well away from the eyes.
3. Little Red Riding Hood And Wolf Costume
This fairy tale works because one child is all red and the other is all grey. Little Red wears a hooded red cape over a white blouse, a dark skirt, warm tights and black ankle boots, with braids and rosy cheeks. Her brother is a friendly wolf in a grey hoodie and sweatpants, paw gloves and sneakers. Sew the felt ears to the hood itself so they move with his head. A grey nose and whiskers in washable paint. She carries a light basket of fabric apples; he carries a plush woodland animal. I'd skip a wolf mask altogether, because rigid masks cut down what a child can see, and they come off at the first kerb anyway.
4. Alice And Mad Hatter Costume
Alice and the Hatter suit a quiet kid paired with a loud one. Alice: a pale blue dress, white apron, white tights, black flats and a black ribbon headband, hair loose or softly waved, a little pink on the cheeks. The Hatter is the place to go wild with mismatched pieces: bright trousers, a colourful waistcoat, a patterned bow tie, a long jacket, striped socks and lace-ups. Make the tall hat from craft foam, not card, since foam bends when it's knocked instead of creasing. Temporary orange hair colour or a soft wig. A toy teacup for Alice and an oversized paper clock for the Hatter.
5. Dorothy And Scarecrow Costume
Dorothy and the Scarecrow mix gingham with straw-coloured scraps. Dorothy wears a blue gingham pinafore over a white blouse, ankle socks and sparkly red flats with non-slip soles, because glitter shoes are often slippery on wet steps. Two braids with blue ribbons, pink cheeks, and a small basket with a plush dog. The Scarecrow has patched brown trousers, a green shirt, a rope-style belt, a floppy hat and brown boots. Skip real straw, which scratches and sheds all over the house; strips of yellow felt at the cuffs give the same look. A painted triangle nose, curved stitch lines for a smile and rosy cheeks keep him friendly.
6. Wednesday And Pugsley Costume
For siblings who like things a little spooky, Wednesday and Pugsley are a gift, since the joke is how serious they look. Wednesday needs a black dress with a crisp white collar, opaque tights and sturdy black shoes, hair parted down the middle into two neat braids. Pale foundation only if it's made for children's skin, plus soft grey shadow and a neutral lip. Pugsley wears a black-and-white striped tee, dark knee-length shorts, tall socks and black sneakers, with his hair combed flat to one side. A little powder on his cheeks is enough. Battery candles or small old-fashioned notebooks make better props than anything frightening or sharp.
7. Astronaut And Alien Costume
Space is a good theme for cold nights, because a jumpsuit hides a lot of layers. The astronaut wears a white jumpsuit with silver tape trim, printed mission patches and a light utility belt, plus white sneakers and silver gloves. If you make a cardboard helmet, cut the face opening much wider than you think; kids need to see their feet on steps. The alien has a metallic green top and leggings, silver boots and a headband with bendy antennae. Use green face paint only on the cheeks and forehead, and a touch of silver shadow. A cardboard control panel for one and a glowing foam planet for the other. The silver tape doubles as reflective trim after dark.
8. Bee And Beekeeper Costume
A bee and a beekeeper is one of the easiest pairs to layer over warm clothes. The bee wears a striped long-sleeve top, black leggings, yellow sneakers and a soft tulle skirt or shorts, with light wings, an antenna headband, rosy cheeks and a little black nose. The beekeeper is in beige trousers, a white button-front shirt, work-style boots and a wide-brim hat. Hang white netting around the hat brim but leave the front open, since full netting over the face is hard to see through and stuffy to breathe in. Child-size gardening gloves and a cardboard honeycomb. Both go easily over thermals for cool October evenings.
9. Shark And Lifeguard Costume
The shark-and-lifeguard joke works well, and neither outfit needs real sewing. The shark is a grey hoodie and sweatpants with grey sneakers, a soft stuffed fin down the back, felt teeth around the hood edge and small side fins that leave the arms free. Paint a grey nose and pink cheeks; don't cover the whole face. The lifeguard wears red shorts over leggings, a white tee with a home-made LIFEGUARD label, a red zip jacket and white sneakers, plus a visor and sunglasses. Make the whistle decorative, or expect it blown in your ear all evening. A foam rescue float is light enough to carry door to door.
10. Dinosaur And Paleontologist Costume
Dinosaur-mad kids will love this one, and the paleontologist outfit is mostly clothes you already have. The dinosaur wears a green hoodie and joggers with soft felt scales down the back, a detachable tail, claw shoe covers and a hood with fabric eyes and teeth. Keep the tail detachable; it's the first thing that gets in the way in the car seat. Green paint around the cheeks and nose. The paleontologist wears khaki trousers or shorts, a utility vest, hiking shoes and a wide-brim safari hat, with braids or a low pony. A soft brush, a cardboard fossil and a canvas field bag. For a toddler, leave off anything small enough to end up in a mouth.
11. Firefighter And Dalmatian Costume
A firefighter and a Dalmatian walk well together all night. The firefighter wears dark trousers with strips of reflective tape at the shins, a black or tan jacket, sturdy sneakers and a light plastic helmet, with a home-made badge and a short length of soft grey tubing for a hose. The Dalmatian wears a white sweatshirt and sweatpants covered in black felt spots. Stitch the spots on or use fabric glue; craft glue lets go in the first wash. Floppy ears on a headband, a soft tail, paw mittens and black sneakers, with a washable black nose, a few face spots and whisker dots. A bright collar with a paper tag adds another light accent in the dark.
12. Chef And Cupcake Costume
The chef and the cupcake is a funny pair that's comfortable for both kids. The chef wears black trousers, a white shirt or jacket, non-slip sneakers and a tall paper or fabric hat with his hair tucked in, plus a painted curly mustache if he wants one. A wooden spoon and a light mixing bowl. The cupcake is built around a pleated cardboard wrapper worn at the waist over leggings and a pastel sweatshirt. Cut the wrapper open at the back and close it with ribbon ties, or she won't be able to sit down. A fluffy tulle frosting layer, felt sprinkles, flats and a cherry headband, with a high bun to echo the swirl.
13. Ketchup And Mustard Costume
Ketchup and mustard is a good choice for school parades, because it's obvious from the far end of a playground. One child wears a red hoodie and sweatpants, the other the same in bright yellow. Big white felt labels on the front carry the joke. Make the caps from light white foam fixed to headbands; a tall cone hat tips over and blocks the view. Red or yellow sneakers and solid gloves, hair tidy under the headpieces, and one small stripe of matching face paint on each cheek. A cardboard tray of felt fries gives them a prop to share, which is half the fun of this pair.
14. Peanut Butter And Jelly Costume
Peanut butter and jelly is the pair I suggest when siblings want matching costumes but different colours. One child wears tan trousers and a tan sweatshirt labelled “Peanut Butter”, the other purple or berry pieces labelled “Jelly”. Bread-shaped panels of soft foam or cardboard go front and back on each. Use wide straps, about two fingers across, so they don't dig into small shoulders. Tan and purple sneakers, natural hair, matching cheek stripes in washable paint. Each child can hold an oversized foam spoon, or they can share a light cardboard sandwich for photos. Foam holds up much better than card if there's rain in the forecast.
15. Sun And Moon Costume
Sun and moon works for siblings of very different ages, since neither role is the babyish one. The sun wears a yellow top, a gold skirt or trousers, yellow tights and gold sneakers, with a bendy sun-ray headband and a little gold shimmer on the cheeks. Use foam or felt rays, not card; card rays snap the first time the headband goes into a bag. The moon has a navy top, silver-star leggings, a deep blue cape and silver shoes, plus a crescent headpiece and skin-safe face gems. Light star wands or battery lanterns each. Iron-on reflective stars on capes and sleeves look pretty and make both children easier to spot from a car.
16. Rain Cloud And Rainbow Costume
A rain cloud and a rainbow turns bad weather into the theme. The cloud wears a grey hoodie, grey leggings and silver sneakers, with stuffing tacked onto the hood and shoulders. Hang blue felt raindrops on short ribbons only, no longer than a hand, so they can't wrap round the legs. Silver cheek shimmer and a cloud headband. The rainbow wears a white top, a brightly striped skirt or trousers, colourful tights and red sneakers, hair in two bunches with multicoloured ribbons, and a soft foam arch across the shoulders. Give both of them blue treat buckets and the two looks suddenly go together.
17. Pirate And Mermaid Costume
The pirate and mermaid is an adventurous seaside pair without anything scary. The pirate wears cropped black trousers, a striped top, a red sash, a dark waistcoat, brown boots and a soft tricorn hat, plus a painted mustache and a rolled treasure map. I'd swap the toy sword for a small treasure pouch; swords get swung at siblings. The mermaid wears a purple top with a teal scale-print skirt over leggings, sparkly flats and shell hair clips. Fix the fin panel behind the skirt above knee height, because a fin at the ankles trips her on stairs. Loose waves, aqua eye shimmer and a little seashell purse.
18. Knight And Princess Costume
A knight and a princess feel grand, but neither piece needs to be heavy. The knight has grey sweatpants, a silver tunic, a soft cape and black boots. Make the armour from metallic fabric or craft foam rather than rigid plastic, which pinches at the elbows. Use a padded helmet with the face open, and a small, light cardboard shield. The princess wears a jewel-toned dress over warm leggings, glittery flats and a velvet cape, with a braid or curls, a soft crown and gentle rosy makeup. A fabric flower or tiny storybook in her hands. Paint the same crest on the shield and the cape and they look like they belong to the same castle.
19. Wizard And Fairy Costume
The wizard and the fairy share stars and moons, which is what ties them together. The wizard wears dark blue trousers and tunic, silver sneakers and a long robe dotted with felt stars. Hem the robe to just above the ankle; any longer and he will trip over it on the first step. A pointed fabric hat, a silver cardboard wand, a temporary silver streak in his hair and a little blue shimmer on his cheeks. The fairy wears a pastel dress over leggings, glittery flats, see-through wings and a flower crown, with braids or curls and a little shimmer at the temples. Make sure her wand has smooth, rounded edges.
20. Ghost And Pumpkin Costume
A ghost and a pumpkin are the classics, made soft and smiley here. The ghost wears a loose white poncho over a white top and leggings, white sneakers and a white beanie. Put the ghost face on the front of the poncho in black felt and leave the child's real face uncovered; the old sheet-with-eyeholes trick shifts as they walk, and then they can't see anything. A bit of pale shimmer on the cheeks. The pumpkin wears an orange sweatshirt and trousers with green shoes, a smiling felt jack-o'-lantern face on the shirt and a green felt collar. A top bun under a small stem headband and rosy cheeks, with matching orange buckets.
21. Vampire And Bat Costume
This one is a little spooky but still friendly, with soft capes, simple makeup and black basics. The vampire wears black trousers, a white shirt, a red waistcoat, polished black shoes and a black cape lined in red, with his hair slicked back using child-safe gel. Skip plastic fangs. They make it hard to talk and eat sweets, so paint two tiny fangs at the lip line instead, along with pale makeup and strong eyebrows. The bat wears a black sweatshirt, leggings and sneakers, with fabric wings sewn from sleeve to side seam so the arms still move. A pointed-ear headband and a touch of silver shadow. Small lantern buckets with crescent moons for both.
22. Mummy And Archaeologist Costume
A mummy and an archaeologist mix a Halloween classic with an explorer. Build the mummy on cream sweatpants and a matching long-sleeve top, and stitch or fabric-glue the strips of gauze-coloured fabric down at both ends. Loose wrapping unravels within a street. Keep the face, hands and shoes clear, and use beige sneakers, a little powder and some brown shadow for an aged but not scary look. The archaeologist wears khaki trousers, a button-front shirt, sturdy walking shoes, a canvas vest, a wide-brim hat and round glasses, with a field notebook, a soft brush and a cardboard tablet of simple symbols. Trim any strip that hangs near the floor.
23. Skeleton And Black Cat Costume
Black clothes make a shared base here, and white bones or cat details tell the two roles apart. The skeleton wears a black sweatshirt and joggers with white felt bones, black sneakers and white gloves. Glow-in-the-dark fabric paint is a good alternative to felt and won't peel. Skull face paint should leave the eyes and mouth clear. The black cat wears a black top, leggings and flats or sneakers, with a soft tail on the waistband, cat ears on a headband, a small black nose, whiskers and a bit of silver on the cheeks. Matching glow bracelets help drivers see two kids dressed head to toe in black.
24. Circus Ringmaster And Lion Costume
The ringmaster and the lion bring a bright circus feel. The ringmaster wears black trousers, a white shirt, a red jacket trimmed with gold ribbon and black boots, plus a mini top hat, a bow tie and a light cardboard hoop for photos. Put her hair in a neat pony with rosy cheeks. The lion wears a tan hoodie and sweatpants with a yarn mane sewn around the hood edge. Loop the yarn rather than cutting it into fringe; loops stay fluffy and don't shed all over the floor. Matching sneakers, fabric paws, a bendy tail, a brown nose and whisker dots. Leave out whips or anything harsh.
25. Farmer And Scarecrow Costume
Plaid, denim and patches give this farm pair a cosy home-made feel. The farmer wears denim overalls over a plaid shirt, brown boots and a soft woven straw-style hat, with painted freckles and a light basket of fabric vegetables. The scarecrow wears patched jeans, a flannel shirt, braces and comfy brown shoes, a floppy hat, and yellow felt strips at the wrists and ankles instead of real straw. Iron-on patches are fine for one night, but stitch round the edges if the jeans are going back into the school wardrobe. A painted triangle nose, stitched smile lines and rosy cheeks. Matching bandanas, and both outfits layer easily over thermals for cold evenings outdoors.
26. Detective And Mystery Clue Costume
A detective and a walking clue suits curious kids who like a puzzle. The detective wears dark trousers, a button-front shirt, a plaid coat and lace-ups, with a soft-brim hat, a magnifying glass, a notebook and a pencilled mustache. The clue is the creative half: a bright dress or matching top and trousers covered in felt question marks, footprints and puzzle pieces, plus colourful sneakers, a question-mark headband and an envelope-shaped bag. Use a fabric glue stick for the felt shapes on a dress you want to keep; it peels off later. A tidy pony and cheek dots. Give them a cardboard case file with a made-up mystery written on it.
27. Robot And Scientist Costume
Silver fabric and colourful buttons turn plain clothes into a robot and a scientist. The robot wears silver sweatpants, a grey sweatshirt and silver sneakers, with a light cardboard chest panel covered in painted dials, felt buttons and bendy tubing. Keep the panel no lower than the hips, or he can't climb a single step. A silver cap with soft antennae, and metallic stripes on the cheeks. The scientist wears black trousers, a bright shirt, a white lab coat and sneakers, plus plain safety-style glasses, colourful gloves, and a messy pony or temporary white streaks. A plastic measuring cup filled with pom-poms makes a safe experiment.
28. Race Car Driver And Checkered Flag Costume
This is a good pair for kids who never stop moving, because it's all flexible clothes and proper shoes. The driver wears a solid jumpsuit trimmed with checkered tape and home-made racing patches, sporty sneakers, fingerless fabric gloves and a light helmet that leaves the face visible, with a little stripe of washable paint under each eye. The flag is a black top and leggings under a sleeveless tunic cut from checkered fabric, with white sneakers, a matching bow or headband and bright red cheeks. Checkered fabric won't fray much if you cut it with pinking shears. A foam steering wheel and a small fabric flag.
29. Cowboy And Cowgirl Costume
Western pieces turn up in most closets and every thrift shop, so this pair is easy to adjust for any age. The cowboy wears jeans, a plaid shirt, a brown vest, boots and a soft cowboy hat, with a bandana, painted freckles and a lightweight cotton rope tied to his belt. Keep the rope short and fixed at both ends, never loose enough to go round a neck. The cowgirl wears a denim skirt over leggings or jeans, a gingham shirt, a fringed vest and ankle boots, with braids and a hat with a coloured ribbon. Plush or soft-headed hobby horses for both, and felt star badges rather than anything that looks like a real sheriff's badge.
30. Hansel And Gretel Costume
Hansel and Gretel are a real brother and sister, which makes them an obvious choice. Hansel wears brown knee-length trousers, a white shirt, a forest-green waistcoat, tall socks and brown walking shoes, with a soft cap, rosy cheeks and a small fabric satchel of oversized felt breadcrumbs. Gretel wears a dirndl-style dress over a white blouse, warm tights and flats, with two ribboned braids and a little pink on her cheeks. A wicker-style basket of felt cookies and wrapped pretend sweets. Gingerbread shapes and pastel trim keep the fairy tale sweet. Felt breadcrumbs also mean no real crumbs ground into the car seat.
A Dress Rehearsal in the Hallway
I always have kids wear the full costume for twenty minutes at home a few days before. That's long enough for an itchy seam, a slipping headband or a shoe that rubs to show up, and it gives you time to fix it. Ask them to sit on the floor, climb the stairs, hold a treat bucket in one hand and drink from a cup. Whatever gets in the way of those four things will be torn off on the night.
What I check before they head out
- Nothing hangs within a hand's width of the ground: capes, tails, gauze strips, robe hems.
- Masks and helmets leave clear sight to both sides and down to the feet.
- Face paint was patch-tested on the inner wrist a day or two earlier, and there are wipes in the bag.
- Each child has something reflective or glowing on both front and back, especially in black costumes.
- There's a warm layer underneath, and the costume still fits over it.
Write your phone number on a strip of tape inside a sleeve or on the back of a badge for younger children. It takes a minute and you'll be glad of it if you get separated in a crowded street.
Let Them Swap Roles Next Year
A sibling costume only works if both children feel they got a good part. That matters more than which pair you choose, whether it's a character duo, animals, explorers or a food joke. The weekend before, have both kids try on every layer and walk around the house with their props. Shorten any cape, tail, wrapper or strip that comes near the floor. Keep faces visible, layers ready for the weather and shoes that are already broken in. Little personal touches like hand-lettered labels or matching buckets do a lot of work. And if one of them grumbles about being the mustard this year, promise them ketchup next time.
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