57 Best Group Halloween Costumes by Group Size (and Who You’re With)

Looking for the best group Halloween costumes in 2025? Whether you're hitting up a party with your best mates, dressing up with the kids, or coordinating a themed office day, matching group costumes are always a crowd-pleaser. From low-effort laughs to wow-factor pop culture references, this guide has ideas for every group size, and every kind of group dynamic.

Trio Halloween Costumes

Three’s not a crowd when it comes to Halloween. In fact, trios are perfect for cute, clever, or classic looks without too much coordination stress. Whether you're teaming up with friends or family, these trio halloween costumes ideas are guaranteed to turn heads.

Pop-Culture Trios
Quick List:

1. The Sanderson Sisters (Hocus Pocus)
2. Barbie, Ken & Weird Barbie
3. Alvin and the Chipmunks
4. The Powerpuff Girls
5. Eleven, Mike & Dustin (Stranger Things)
6. Thor, Loki & Hela
7. Harry, Ron & Hermione (Harry Potter)
8. Shrek, Donkey & Fiona
9. Mario, Luigi & Princess Peach

Pop culture is full of iconic trios, which makes these costumes fun and instantly recognisable. You could go as The Sanderson Sisters from Hocus Pocus, or take a modern twist with Barbie, Ken, and Weird Barbie. Want to keep it light? Try Alvin and the Chipmunks or The Powerpuff Girls.

TV fans might love Stranger Things characters like Eleven, Mike, and Dustin. Or go full superhero with Thor, Loki, and Hela. You’ll find plenty of options like these in PartyWorld’s Halloween costumes collection, just add a wig or prop to complete the look.

These group halloween costumes work especially well when you each bring your own flair to the outfit. Add glitter, bold makeup, or even create a personalised Halloween T-shirt for your character's quote or name. It’s a fun way to make the costume yours.

Classic Trios

Quick List:

1. Witches, Vampires & Mummies
2. Traffic Lights (Red, Yellow, Green)
3. Rock-Paper-Scissors
4. Angels-Devils-Cupids
5. Toast-Butter-Jam
6. 1920s flapper girls
7. Three Blind Mice
8. Three Little Pigs

You can never go wrong with the classics. Witches, vampires, and mummies are timeless and easy to DIY if you’re on a budget or short on time. Or go with a simple concept like red, yellow, and green traffic lights, great for adults or teens.

Other trio halloween costumes ideas include Rock-Paper-Scissors, Angels-Devils-Cupids, or even Toast-Butter-Jam for something silly. If you're after something a little more glam, how about 1920s flapper girls from the ladies' Halloween costumes section?

Classic trios are super versatile, which makes them perfect for mixed ages or family-friendly events. You can also reuse elements of the costume in future years. It’s a win-win for style and practicality.

4-Person Group Costumes

With four people, you have room to get a little more creative. Whether it's an all-female crew, a double date, or a family of four, this size opens up some seriously fun possibilities. Let’s take a look at some of the best group theme halloween costumes

Movie & TV Foursomes

Quick List:

1. Ghostbusters
2. Ninja Turtles
3. The Wizard of Oz
4. The Incredibles
5. Scooby-Doo
6. Sex and the City
7. Friends Cast
8. Golden Girls

The best part about movie and TV character groups? Everyone usually has their own distinct style or personality, which makes choosing roles fun. Go as the Ghostbusters, Ninja Turtles, or the gang from The Wizard of Oz, a crowd favourite for decades.

For families, The Incredibles is a brilliant pick: stretchy suits, eye masks, and lots of red. If you're feeling nostalgic, try Scooby-Doo characters, Daphne, Velma, Shaggy, and Fred. All easy to pull off with accessories, and you’ll find most pieces under funny costumes or superhero themes.

Want something more offbeat? The Sex and the City girls, Friends cast, or even Golden Girls are fun twists for adults. Mix pop-culture with personal touches to make your look stand out.

Gender-Themed Groups

Quick List:

1. Mean Girls
2. Greek Goddesses
3. The Spice Girls
4. '80s aerobics instructors
5. Classic witches with matching hats and broomsticks
6. Charlie’s Angels
7. Anchorman News team
8. The Beatles
9. Men in Black
10. Old-school Wrestlers

When your group is all gals or all guys, leaning into a shared aesthetic makes dressing up easier, and more fun. For female group halloween costumes, try Mean Girls in their iconic pink outfits, Greek goddesses with flowy dresses and gold accents, or The Spice Girls if you’re feeling nostalgic.

For the lads, guy group halloween costumes like The Beatles, Men in Black, or old-school wrestlers are solid choices. Check out the men's Halloween costumes section for ready-made looks or build your own with accessories and face paint.

Office & Work Group Costumes

Coordinating costumes at work can be tricky, but it doesn’t have to be boring. A little humour and light creativity go a long way, especially when the whole team gets involved. These office group halloween costumes ideas for work are office-appropriate and easy to pull off.

Safe & Funny Ideas

Quick List:

1. Crayon Colors
2. Deviled Eggs
3. Emojis
4. Social Media Platforms
5. A box of cereal mascots
6. Fruit salad (banana, grape, strawberry, etc.)
7. Tired office workers, robes, slippers, and coffee cups!
8. Where’s Waldo
9. Paper, Printer, and Toner Cartridges

Go for ideas that are clever, not cringey. Think crayon colours, everyone wears a different shade, or dress up as “deviled eggs” with one person in horns and the others in white with yellow “yolks.” You could even show up as different emojis or social media platforms.

You’ll find plenty of items in the funny costumes range to build on. These ideas are great for breaking the ice and getting a laugh at the morning meeting.

Quick, Low-Effort Costumes

Quick List:

1. Tourists
2. Error 404: Costume not Found

Pressed for time but still want to join in? Go as a tourist crew with maps, sunglasses, and cameras. Or wear plain black and add a name tag that reads “Error 404: Costume Not Found.”

Last-minute ideas people love:

1. “Days of the Week” with T-shirts for each day
2. The Four Seasons (spring, summer, autumn, winter)
3. Colour-coded teams (blue crew, red squad, etc.)

These ideas are quick, easy and don’t need much prep. Perfect for teams who want to have fun without overthinking it. Just grab what you have, add a prop or two, and you're ready to go.

Large Group Costume Ideas (6+ people)

When you’ve got a big crew, school group, extended family, or a gang of friends, you’ll want costumes that are flexible and fun. The goal is something that scales easily but still feels coordinated. Let’s dive into large group halloween costume ideas that deliver.

Classic Monsters Crew

Quick List:

1. Monster Crew

Nothing says Halloween like a spooky crew of monsters. Each person picks a different classic: Dracula, Frankenstein, Mummy, Ghost, Zombie, Witch, Skeleton, you name it. This theme is perfect for mixed ages and super easy to pull together.

Why it works:

• It’s timeless and always in style
• You can reuse costumes each year
• Everyone gets to choose their favourite character

Check out Scream costumes or devil masks for the scarier crew members. Add some fake blood or glow-in-the-dark face paint and you’re sorted.

H3: Easy Ideas

Quick List:

1. Rainbow
2. Traffic Signs

Need something simple and low-stress? Go for a group of crayons, a rainbow (each person wears a different colour), or even traffic signs using cardboard and straps. These costumes are fun, cheap, and quick to make.

Other creative group halloween costumes men and women love:

1. Deck of cards (Queen of Hearts, Ace of Spades, etc.)
2. Safari animals or zoo keepers
3. Famous snacks like M&Ms or Skittles
4. Carry-me Costumes
5. Retro Aerobics Instructors

Inflatable options from the carry-me costumes section make for hilarious photo ops. Or go with retro aerobics instructors, just grab neon gear and sweatbands. Large groups are the life of the party when everyone’s committed to the theme.