34 trio Halloween costume ideas for you and your besties to slay spooky szn
Cause, baby, two three is better than one!
What's better than dressing up with your BFF for Halloween? Dressing up with two of your BFFs for Halloween. You know what they say, the more the merrier! But really, we say trio Halloween costumes are elite.
Think about it, there's no shortage of inspo for costumes for three people. On the silver screen, channel your fave TV shows and films by dressing up as the main characters from Lizzie McGuire and Clueless. Or IRL, pay homage to iconic girl groups from Destiny's Child to Haim. Yep, when you have three people together for a costume look, you can take all those funny costumes, pop culture moments, and downright scary costumes to a whole other level.
Trust us when we say October 31st comes around quick, so it's time to get these ideas out of the group chat, pronto. Don't leave it ‘til the last minute, check out our full round-up of trio Halloween costumes below now. Happy trick or treating!
Conrad, Belly and Jeremiah from The Summer I Turned Pretty
*The* cultural reference point for 2025, your trio going as Connie, Belly and Jere would be iconic.
Andy, Miranda and Emily from The Devil Wears Prada
With all the hype around The Devil Wears Prada 2, revisit the iconic trio of Miranda Priestly and her two assistants, Emily and Andy from the first film. Iconic dialogue, not included...
Supermodels
Back in the '90s, magazine cover was covered with the faces of iconic supermodels like Kate Moss, Naomi Campbell, and Christy Turlington. Get ready to strut your stuff!
Dylan, Natalie, and Alex from Charlie's Angels
![381311 06 drew barrymore dylan, cameron diaz natalie and lucy liu alex, left to right, star as a trio of elite private investigators in columbia pictures action comedy, charlies angels photo by columbia picturesnewsmakers](https://hips.hearstapps.com/hmg-prod/images/gettyimages-1304410-670cd1db3e1eb.jpg?crop=1.00xw:0.763xh;0,0.128xh ""Charlie''s Angels" Publicity Stills")
I'm just gonna say it: Lucy, Drew, and Cameron are the most iconic Angels, IMO.
Sebastian, Kathryn and Annette Cruel Intentions
Legendary 90s teen flick Cruel Intentions boasts one of the most twisted love triangles of all time, making for a perfect trio costume.
Rachel, Monica, and Phoebe from Friends
If you can't pick one character from Friends, grab your BFFs and pick three! Plus, it gives you an excuse to wear all of your nineties clothes.
Blair, Serena and Nate from Gossip Girl
Blair, Serena, and Nate...name a more iconic trio: we'll wait! XoXo, Gossip Girl.
Mary, Winifred, and Sarah Sanderson from Hocus Pocus
Arguably one of the most well-known Halloween movies of all time, dress up as Winifred, Sarah, and Mary from Hocus Pocus with wigs, cloaks, mesh gloves, and overdone makeup.
Gretchen, Regina, and Karen from Mean Girls
Put on your best pink 'fits and grab your Burn Book to look so fetch this Halloween.
Mabel, Charles, and Oliver from Only Murders in the Building
The trio from OMITB all have distinct senses of style that would be so fun to turn into a Halloween costume (but IMO, Selena's wedding dress moment is especially iconic).
Buffy, Angel and Spike from Buffy The Vampire Slayer
Buffy could never decide between Angel and Spike...but this Halloween, nobody has to!
Tai, Cher, and Dionne from Clueless
As if! If you want to be on trend and throw it back to the ’90s, this Clueless costume is def the way to go!
Austin Powers, Foxxy Cleopatra, and a Fembot in Austin Powers in Goldmember
I can't tell which Austin Powers costume I like best?!? Whichever character you get, you'll be totally ~groovin'~.
Alana, Danielle, and Este Haim
No, you can't become the fourth Haim sister – but with a black bra top and slouchy pants, you and your two besties can look just like the singing sisters.
Donna and the Dynamos from Mamma Mia!
10/10 would be friends with Donna, Tanya, and Rosie from Mamma Mia – or the sequel, we're not picky.
Harry, Ron, and Hermione
C'mon, it wouldn't be Halloween without a little Harry Potter thrown in there! Get your wands and witches hats out for a magically spooky evening...
Blossom, Bubbles, and Buttercup from The Powerpuff Girls
It would be rude not to include one of the most iconic trios from our collective childhood. The Powerpuff Girls are a trio that can't be beat, especially with a Western-core twist to keep the look feeling fresh this Halloween.
Art, Tashi, and Patrick from Challengers
I don't recommend getting yourself into an incredibly messy love triangle, but I do recommend this v topical costume idea.
Prue, Piper, and Phoebe from Charmed
Channel the 'Power of Three' by dressing up as the witchy Halliwell sisters.
Swifties
Head's up: Halloween gives you the perfect excuse to wear your Eras Tour outfit again. Don't forget your friendship bracelets!
Corinne Sullivan is an Editor at Cosmopolitan, where she covers a variety of beats, including lifestyle, entertainment, relationships, shopping, and more. She can tell you everything you need to know about the love lives of A-listers, the coziest bedsheets, and the sex toys actually worth your $$$. She is also the author of the 2018 novel Indecent. Follow her on Instagram for cute pics of her pup and bébé.
Chaise Sanders is a NYC-based writer with a knack for all things lifestyle, beauty, entertainment, and style. Her work has graced the pages of Cosmopolitan, Country Living, InStyle, and more. When she's not busy crafting words, you can find her on Instagram roaming the streets of New York City, hunting down the best food spots, hidden gems, and deals.
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