22 Super Easy Last-Minute Halloween Costumes Using Things You Already Have

Forgot to plan a costume? Same. The good news: some of the funniest, most-liked Halloween costumes are the ones you pull together in 15 minutes with stuff you already own and involve no sewing, no expensive props, and no last-minute store run. These easy DIY Halloween costumes prove you don’t need a big budget (or any lead time) to show up looking iconic.

Scroll through for 22 clever, low-effort ideas (pop-culture characters, funny puns, and viral looks) most of which you can make from your closet plus a marker and some cardboard. Save your favourites so you’re never caught costume-less again!

1. Karen (“Can I Speak to the Manager?”)

A woman in her 50s, wearing sunglasses and a white top with pink pants, holding a phone to her ear. She has a lanyard with an ID badge around her neck, standing in a well-lit modern kitchen. — Credit: Pinterest

The internet’s favourite character. Throw on a sensible top, a lanyard, and big sunglasses, tease your hair, and hold your phone to your ear mid-complaint. Instantly recognisable and hilarious.

What you need: a lanyard, sunglasses, a plain top, your phone. If you have a name tag and write “KAREN”, even better

2. Red Flags

A woman in a red dress with various triangular paper tags pinned to the back, each with handwritten phrases like 'Only takes shirtless pics', 'plays COD', and 'calls all his exes crazy'. — Credit: Pinterest

The ultimate funny last-minute look. Wear anything red, then safety-pin on paper “red flags” with dating red flags written on them (“plays COD,” “has an Android,” “calls his exes crazy”). A guaranteed conversation starter.

What you need: a red dress or top, red paper, safety pins, a marker.

3. A Sim (The Sims)

A person stands in a mirror selfie, wearing a green corset, wide-legged blue jeans, and green heels. They hold a sign with a drink icon and have a green diamond hovering above their head, in a stylish room with a pink sofa. — Credit: Pinterest

Pure genius for minimal effort. Make a green “plumbob” diamond out of cardstock and float it above your head on a headband (clear wire or a pipe cleaner). Add a little speech-bubble prop if you want. This is actually quite quick to put together, as the clothes don’t really matter.

What you need: green paper/cardstock, a headband.

4. “Your Ex” (Hot Garbage)

Person wearing a black trash bag dress with a sign reading 'YOUR EX.' and red sneakers, standing in a modern kitchen. — Credit: Pinterest

Cheeky and SO easy. Wear a black trash bag as a dress (cinch it at the waist) and pin on a cardboard sign that reads “Your Ex.” Done, and very funny.

What you need: a black trash bag, cardboard, a marker.

5. The Plastics (Mean Girls)

Three young women posing together against a backdrop of sheer fabric and greenery, showcasing casual fashion with a focus on pink tones and skirts. — Credit: Pinterest

Grab your girls (or yourself) for “on Wednesdays we wear pink.” Everyone coordinates in their own pink top and skirt. Zero cost, maximum iconic, and perfect for a group.

What you need: pink pieces you already own.

6. “She Doesn’t Even Go Here” (Mean Girls)

A person wearing a blue hoodie and sunglasses holds a sign that reads 'SHE DOESN'T EVEN GO HERE!!'. — Credit: Pinterest

Another Mean Girls win. Put on a blue hoodie and sunglasses and carry a cardboard sign that says “She Doesn’t Even Go Here!!” Low effort, instant laughs.

What you need: a blue hoodie, sunglasses, cardboard.

7. Mia Wallace (Pulp Fiction)

A person with a short black bob haircut, wearing a white button-up shirt, black shorts, and brown knee-high boots, stands in a doorway holding a cigarette. — Credit: Pinterest

Effortlessly cool. A loose white button-down, black mini or slip, and a blunt black bob (wig optional) with a bold red lip. Add a fake “nosebleed” for the iconic scene.

What you need: a white shirt, black bottoms, red lipstick (black wig optional).

8. Last-Minute Mummy

A person wearing a white, layered outfit composed of fabric strips, paired with oversized gray pants and a black waistband. The background features a simple room with a dresser and soft lighting. — Credit: Pinterest

The classic no-shopping costume. Wrap yourself in white gauze, cheesecloth, or even toilet paper over neutral clothes, and smudge on a little makeup. Easy and always reads.

What you need: gauze, cheesecloth, or toilet paper.

9. Kris Jenner

A stylish individual in a black blazer and pants, wearing oversized sunglasses and hoop earrings, stands confidently in a classroom setting, with a backpack and a small handbag. — Credit: Pinterest

Momager energy. An all-black suit (blazer + trousers), a short dark wig, oversized sunglasses, and big hoop earrings. Pose like you’re running the family business.

What you need: a black blazer + trousers, sunglasses (dark wig optional).

10. Justin Bieber (“Sorry”)

A person with short blonde hair wearing a white oversized shirt and headphones, holding a sign that says 'SORRY'. — Credit: Pinterest

For music fans. A plain white tee, headphones around your neck, and a hand-lettered “Sorry” sign. Simple, recognisable, and a little tongue-in-cheek.

çWhat you need: a white tee, headphones, cardboard.

11. Saturday Night vs. Sunday Morning

A man and a woman posing together, each wearing black outfits with labels. The woman has a zebra print top and a black skirt, labeled 'Saturday Night'. The man has long, curly hair and a similar outfit with a label 'Sunday Morning'. — Credit: Pinterest

A hilarious duo. One of you is “Saturday Night” (glam and put-together; the other is “Sunday Morning”) messy wig, smeared makeup, same outfit but wrecked. Add matching signs. You can make this solo by just being the “Sunday Morning” version instead.

What you need: a going-out outfit, a messy wig, two signs.

12. Fight Club (the Narrator)

Portrait of a young woman wearing a white shirt and black tie, with makeup that includes a red nose and blush on the cheeks. She has a name tag that reads 'Cornelius' and is posing against a plain wall. — Credit: Pinterest

Edgy and easy. A rumpled white dress shirt, a loosened tie, a “Hello, my name is…” nametag, and some fake bruises and blood. First rule: look like you’ve been through it.

What you need: a white shirt, a tie, a nametag, makeup.

13. Day-Off Diva

A woman wearing a pink headscarf, sunglasses, and a red robe stands outdoors holding a yellow smiley mug and a magazine. She has on striped shorts and white knee-high socks with black shoes. — Credit: Pinterest

The comfiest costume on the list. A silky robe, a towel turban, big sunglasses, a coffee mug, and a magazine. You’re basically dressed as “my perfect day off.”

What you need: a robe, a hand towel, a mug, sunglasses.

14. Mia Thermopolis (The Princess Diaries)

Person wearing a blue blouse with a bow tie and a plaid skirt, standing in a hallway with a caption saying 'Halloween costume loading...'. — Credit: Pinterest

Before the makeover. A plaid skirt, a collared button-down, a ribbon tie, glasses, and your hair left curly/frizzy: the full pre-princess schoolgirl look. Cute, recognisable, and all from your closet.

What you need: a plaid skirt, a collared shirt, a ribbon, glasses.

15. Beverly Hills Housewife (Post-Op)

A person wearing oversized sunglasses and a headband, with a bandaged face, holding a Starbucks cup and a prescription bottle, standing in a bathroom. — Credit: Pinterest

Funny and all closet. Athleisure or a robe, a headband, face/nose tape and bandages, oversized sunglasses, a coffee, and lots of gold jewellery. “Recovering” in style.

What you need: athleisure, tape/bandages, sunglasses, a coffee cup.

16. Ariana Grande

A person with long hair in a high ponytail wearing a gray oversized sweatshirt and black thigh-high socks, holding a cold beverage. — Credit: Pinterest

A fan-favourite and all closet. An oversized grey sweatshirt, a sky-high ponytail, thigh-high boots, a choker, and an iced coffee in hand. Instantly recognisable with zero props. What you need: an oversized sweatshirt, a hair tie, thigh-high boots, an iced coffee cup. Credit: [add original source link]

17. French Girl (Parisian)

A woman in a black dress and red beret poses playfully with a baguette, wearing a black scarf and showing lipstick marks on her neck. — Credit: Pinterest

Oui oui. A little black dress, a red beret, a striped neck scarf, bold red lips, and a baguette under your arm (draw on a few “kiss” marks for fun). Chic and effortless.

What you need: a black dress, a beret, a scarf, red lipstick, a baguette.

18. The Scarlet Letter (“A”)

A woman wearing a black corset top with a red letter 'A' and black jeans, standing in front of a wall covered with a collage of photos. — Credit: Pinterest

A clever literary look. Go all black and pin a big red “A” to your chest — done. Smart, recognisable, and about as easy as it gets.

What you need: black clothes, red felt or paper for the “A”.

19. If You Give a Mouse a Cookie

A girl smiling while wearing a white shirt and denim overalls with a cookie design in the pocket. She has her hair in two buns and painted facial features resembling a cartoon character. — Credit: Pinterest

A sweet storybook costume. Overalls, a white tee, a little mouse nose and whiskers, hair in buns, and a (real or felt) chocolate chip cookie in your pocket. Adorable and so simple.

What you need: overalls, face paint for the mouse nose, a cookie.

20. The Parent Trap (“I’m Not Mature Enough for This”)

A woman in a beige shirt dress stands in front of a closet filled with white clothing, gesturing with one hand and holding a cigarette in the other, with sunglasses on and a caption that reads, 'I'm not mature enough for this.' — Credit: Pinterest

A nostalgic quote costume. A relaxed, cool-girl outfit (neutral button-down + sunglasses) paired with the famous “I’m not mature enough for this” line as your caption or a little sign. Iconic for movie fans.

What you need: a neutral shirt, hair roller, sunglasses, a sign (optional).

21. Serving c*nt!

A person dressed in a black outfit with a white apron holding a tray with a sign that says 'CUNT' while sipping from a glass. — Credit: Pinterest, eleanor_mcq

A cheeky, confident look: the classic maid outfit (little black dress, apron, gloves) holding a silver tray with a sign that delivers the iconic “serving c*nt” line.

What you need: a black dress, an apron, a tray, a sign.

22. Regina George’s Tank (Mean Girls)

A young woman stands outdoors wearing a white crop top with purple circles on it and a black mini skirt, smiling playfully, with a shoulder bag. — Credit: Pinterest

The ultimate Mean Girls deep cut. Recreate Regina’s sabotaged white tank with the two cut-out circles (the Cady revenge scene). Instantly gets a laugh from anyone who knows the movie.

What you need: a white tank, colores underwear, scissors (or felt circles), a mini skirt.

Tips for an easy last-minute costume

Shop your closet first. A white shirt, a black dress, athleisure, and a hoodie are the base of half this list.
Cardboard + a marker = a costume. So many of these are just a sign or a prop you make in five minutes.
Lean into puns and pop culture. The funniest easy costumes need zero explanation.
Commit to the pose. Half the look is attitude — practice one good photo pose.

Save this for your next last-minute Halloween

No time, no budget, no problem. With a few closet staples and a little creativity, you can pull off a costume that looks like you planned it for weeks. Pin this list so you’ve always got an easy idea ready to go!