Slay Together, Stay Together: 10 Best Halloween Costumes for Trios

10 Best Trio Costumes to Try This Halloween 2025

Grab your two besties because it’s trio season! Whether you’re going for spooky, sparkly, or straight-up iconic, this year’s Halloween lineup has the perfect mix of cute, creative, and Insta-worthy looks. From Y2K nostalgia to fantasy-core magic, here are 10 trio costumes that will totally steal the spotlight this Halloween 2025.

1. K-Pop Demon Hunters

Imagine your trio stepping out like the hottest K-pop girl group on a world tour. Think performance-ready fits: black mini skirts, rhinestone crop tops, lace gloves, thigh-high boots, and shimmering stage makeup. Add headset mics, sleek ponytails, and maybe even a few fake in-ear monitors for that “about to perform live” effect. The vibe is fierce, glam, and full of choreography energy. This look screams “world domination meets pop perfection.” Bonus points if you practice a little dance routine to make your Halloween entrance truly legendary.

2. Totally Spies!

Step into your secret agent era as Clover, Sam, and Alex, the ultimate Y2K icons. Rock the signature spy catsuits in red, green, and yellow (bonus if they’re metallic or latex for extra shine), then finish the look with matching belts, gloves, and heels. Throw in fun gadgets like old flip phones, walkie-talkies, or hairbrush microphones for that playful spy vibe. It’s the perfect mix of nostalgic, girly, and bold. Whether you’re on a mission to find snacks or the best party in town, you’ll turn heads everywhere you go.

3. The Chipettes (Alvin & The Chipmunks)

Time to bring the sass and sparkle as Brittany, Jeanette, and Eleanor! These adorable singing chipmunks are all about personality, so play up your trio’s style. Brittany loves pink and glam, Jeanette is the brainy-chic one, and Eleanor rocks sporty-cute energy. Go for matching sequin skirts, cropped jackets, and fuzzy ears. Add microphones, glitter sneakers, and bold lashes for a fun performance-ready twist. It’s comfy, coordinated, and perfect for girls who love a costume that’s both cute and chill.

4. The Powerpuff Girls

Sugar, spice, and everything nice, plus a little edge. Blossom, Bubbles, and Buttercup never go out of style, especially when you add a modern 2025 spin. Think pastel mini dresses with corset details, platform boots, and coordinating bows or hairstyles. For makeup, go big with bold eyeliner, shimmery blush, and heart-shaped glitter. This look is equal parts sweet and powerful, showing off each girl’s personality while keeping that cohesive “squad goals” energy. Perfect for a night out, photo ops, or twinning TikToks.

5. Kiss, Marry, Kill

One of the trendiest trio ideas of the year, and it’s so easy to customize. Go for a flirty red outfit for “Kiss” (think lips, hearts, or silk), a dreamy white or pastel look for “Marry” (lace, satin, or pearls), and a bold all-black fit for “Kill” (leather, dark lipstick, and attitude). The contrast makes for stunning photos, and it’s such a fun concept to play up at parties. This costume gives you all the freedom to mix your aesthetics while staying part of the same theme. Flirty, fierce, and full of personality.

6. The Sanderson Sisters from Hocus Pocus

It’s not Halloween without a little witchy chaos! Winifred, Sarah, and Mary are the perfect pick for a trio that loves a bit of drama. Layer up with corsets, flowy skirts, and dramatic capes in jewel tones such as green for Winifred, purple for Mary, and red for Sarah. Go big with teased hair, deep lip colors, and a dash of glittery magic. You can make it traditional or remix it into a glam witch version with sequins and platform boots. Cast your spells, cackle together, and serve spooky sister realness all night long.

7. Sun, Moon & Stars

Dreamy, cosmic, and effortlessly beautiful, this celestial trio is perfect for anyone who loves a softer, mystical vibe. One of you shines as the golden Sun with warm tones, glitter, and maybe even a crown. Another becomes the cool silver Moon in silky whites and shimmering accessories. The last dazzles as the Stars in deep navy or black covered in sparkle. Flowing fabrics, rhinestones, and soft waves or braids will make you look straight out of a fantasy movie. It’s the perfect ethereal trio for any aesthetic lover.

8. Fairy Godmothers from Sleeping Beauty

Flora, Fauna, and Merryweather bring major color-coordinated charm. Dress up in pink, blue, and green dresses with flowy sleeves and add tulle or sparkly overlays for a magical update. Top it off with fairy wings, glitter makeup, and little wands. You can go classic Disney with full gowns or modernize it into mini tulle skirts and corset tops. It’s sweet, nostalgic, and a total crowd-pleaser. Sprinkle a little fairy dust wherever you go because this trio is made for girls who love to shine with kindness and a hint of sass.

9. Three Blind Mice

A cute and comfy favorite that always gets a laugh. Grab gray outfits like matching sweatsuits or mini dresses, throw on mouse ears, black sunglasses, and little tails. Carry walking sticks or add glitter to your makeup for a chic twist. It’s perfect if you want something low-effort but still creative. You can even make it trendy by adding faux-fur coats, silver accessories, or matching sneakers. Simple, cozy, and guaranteed to be a party favorite.

10. The Gotham Girl Gang: Harley Quinn, Poison Ivy & Cat woman

Serve pure chaos and confidence with this comic book power trio. Harley brings the playful edge with red and blue accents or a sequin bodysuit, Ivy goes for sultry greens and vine details, and Catwoman keeps it sleek in black leather or latex. Add bold eye makeup, dramatic hair, and fierce boots to finish the look. Together, you’ll look unstoppable like the ultimate girl gang running Gotham City. It’s sexy, strong, and made for girls who want to own the night.

Bonus Tip:

Coordinate your hair and makeup to match the trio’s vibe. Whether you’re going glam, gothic, or glittery, a cohesive color palette ties everything together for that perfect group pic moment 📸💅

Which trio are you and your besties dressing up as this year? Drop your pick below and tag your spooky squad when you post that iconic photo