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These Halloween Costumes For 3 People Are Perfect For Your Trio This Year

Get ready to slay the Halloween scene with your squad this year. It’s time to ditch the solo act and plan the ultimate trio of Halloween costumes that will elevate your spooky season style game to a whole new level. Why settle for a pair when you can team up with two of your besties? Together, you’ll become a serious triple threat that’s bound to haunt the night and shine under the full moon’s glow. 

These wickedly creative yet easy-to-put-together Halloween costume ideas for three people are about to become your ultimate go-to for this year’s festivities. From iconic pop culture classics that never go out of style to the latest TikTok trends, the possibilities and Halloween fun are endless. If you’re looking to conjure up grins, send shivers down your friends’ spines, or simply steal the eerie streetlamp spotlight, these Halloween costume concepts are here to cast their enchanting spell.

So, grab your partners-in-crime, unleash your creativity, and get ready to kill the Halloween fashion game like never before. Whether you’re planning a night of trick-or-treating out on the town or hitting up an epic Halloween monster mash, I’ve got you covered with 10 fantastic Halloween costumes designed for three people.


Who wants to be just Ken, when you can be Barbie? Barbie might be a basic outfit choice this Halloween, but why not live in the Barbie World just a little longer? With so many costume options to explore, I suggest you go with plaid dress Barbie, cowgirl Barbie, or roller skater Barbie. Or you can try different Barbies altogether, such as President Barbie, Mermaid Barbie, and even Weird Barbie.

Gotham City Sirens

With Harley Quinn making her return to Max, it’s the perfect time for a girl group of three to channel the infamous Gotham City Sirens: Harley Quinn, Poison Ivy, and Catwoman. Embrace the allure of these iconic femme fatales with three distinct but equally captivating looks: sleek leather catsuit, enchanting botanical goddess, and playful harlequin mischief-maker.

Harry Potter

If you haven’t heard, DracoTok is back on TikTok for the fall, so it’s the perfect time to immerse yourself even deeper into the wizarding world. Witches and wizards are a classic costume choice. Whether you choose three of your favorite houses or opt for the iconic Golden Trio (aka Harry, Ron, and Hermione), you’re sure to enchant the night with your Hogwarts spirit.

The Little Mermaid

Make a splash at your Halloween party with these Little Mermaid trio costumes. Inspired by the enchanting live-action film, you can dive into the mermaidcore trend as Ariel, Flounder, and Sebastian for a whimsical under-the-sea adventure. Or if you’re feeling a bit villainous, transform into Ursula and her sinister sidekicks, Flotsam and Jetsam.

The Lorax

Replying to @alex_n259 FINAL EDIT! Loved this series so much!!!! 🥹✨ #thelorax #letitgrow

♬ DO THE DANCE – Gavin Duh

How bad could you really be popping out in a Lorax, Onceler, and Grammy at a Halloween party? Not bad at all — in fact, you’d be unforgettable with this unconventional trio costume. This unique ensemble will make you the center of attention, especially since it’s been a hit on TikTok recently. Let your creativity grow with this silly ‘fit.

The MAndalorian

May the Force guide your costume choices this Halloween. The latest Star Wars series just hit Disney+, so why not step into the shoes of fierce heroes like Ahsoka, the fearless Mandalorian, or the adorable Baby Yoda? If you’re not a fan of the newer characters, though, transport yourselves to a classic costume galaxy far, far away and join the Jedi ranks as Luke Skywalker, Princess Leia, and Darth Vader.

McDonald’s Characters

While Grimace’s birthday and his viral milkshake celebration may be in the past, why not keep the party going this Halloween? Get into the spirit by donning costumes inspired by Grimace and the rest of the McDonald’s gang. Serve up sweet smiles and spread joy as you embody the lovable Grimace or any other iconic character, whether it’s the mischievous Hamburglar or the always-charming Ronald McDonald himself.

MOnster High

Walking down a darkened hallway, everybody turns to look at you with your nostalgic Monster High Halloween costumes. Whether you’re dressed as Clawdeen Wolf, Draculaura, or Frankie Stein, you’ll be scary cool with these throwback looks. Plus, these freaky-yet-fabulous looks are just in time for the premiere of the second Monster High movie on Oct. 13 on Nickelodeon.

Super Mario Bros.

You’re gonna love the Super Mario style ‘til the very end. Get an instant 1-Up as this costume ensemble brings the beloved video game to life. Whether you’re stomping on Goombas, collecting coins, or rescuing the princess from Bowser’s clutches, Mario, Luigi, and Peach are the perfect characters for a trio costume.

Taylor Swift Eras

If you haven’t seen Taylor Swift in concert, now’s your chance to bring her Eras Tour to your local streets. Pay homage to her iconic career by creating unique Halloween costumes inspired by three of her eras. From folklore cardigans to Shake It Off cheerleading uniforms and Midnights dresses, it’s time to put on that signature bold red lip and be fearless this Halloween.

Lily Brown

Emerson '25

Lily Brown is a writer at the Her Campus National Writers Program. She writes for the Style and Culture verticals on the site, including fashion, beauty, decor, digital, and entertainment coverage. Beyond Her Campus, this fall Lily will be a junior at Emerson College in Boston, MA, majoring in Journalism with a Publishing minor. She works as the Creative Director for the on-campus lifestyle publication, Your Magazine, where she establishes and curates the conceptual design and content for the entire publication ranging from style, romance, music, pop culture, personal identity, and college experiences. She has written and photographed for Your Mag along with several other on-campus magazines. Lily was recently recognized for her work on YM and awarded an EVVY for Outstanding Print Publication. In her free time, Lily maybe spends a little too much time keeping a close eye on captivating red carpet and runway fashion, and binge-watching her favorite shows. She also enjoys expressing her thoughts through creative writing, exploring new destinations, serving delectable ice cream and cookies at a local bake shop, and blasting ABBA, Dua Lipa, Harry Styles, and Lady Gaga on Spotify. Additionally, she actively contributes to fostering a sense of community among college residents as a dedicated Residential Assistant.