Best Friend Halloween Costume Ideas

by |September 30, 2023
Categories: Costume Guides

BFF Costume Ideas for Halloween

Are you and a best friend literally attached at the hip? Okay, not literally, but you get what we mean! We’ve debated and deliberated and we decided that having a bestie in high school is actually more vital than owning a cell phone. Allow us to explain…. Who else are you going to pass notes to when you’re sitting in Chemistry class bored out of your mind? Your BFF of course. Plus, it’s not like you could eat a tub of chocolate frosting in your PJs while binge-watching The Vampire Diaries with just anyone! You need your ride-or-die sister-from-another-mister by your side to partake in all of your slightly awkward favorite activities. In fact, you need your other half with you to partake in everything you do, even Halloween! It's obvious your bestie is vital to your very existence (that might be a slight exaggeration, but you understand), so we’ve conjured up some of our cutest costumes for BFFs. We have tons of options to fit all kinds of bestie relationships so pick out your favorite, put it on, and start posing for some Instagram posts. Your "likes" are going to skyrocket!


1. Angel and Devil Halloween Costumes

Angel and Devil Costumes

Plus Size Sexy AngelSexy Devil

Is your best friend usually filling your head with tons of clever ways to get into trouble? Or maybe YOU’RE the one who's coming up with all the mischievous schemes and your bestie has to be the voice of reason. Either way, our angel and devil costumes will be a great way to give people some insight into your dramatically different personalities. Plus, this is a classic good/bad combo that never goes out of style!


2. Clueless Costumes: Cher, Dionne, and Tai

Clueless Costumes

Dionne CostumeCher CostumeTai Costume

Thinking about wearing your Halloween costume from last year? AS IF, you must be buggin'! You and your BFFs are trendsetting fashionistas who should be maxing out daddy’s credit card on Rodeo Drive, not recycling old frocks. Show off your love for the best coming-of-age comedy film from the 90s by wearing our exclusive Cher, Dionne, and Tai costumes. It’s perfect for total Betty besties who look great in plaid and enjoy talking like Valley Girls from time to time. Like... totally!


3. Batman Costumes: Batman and Robin

Batman and Robin Costumes

Batman CostumeRobin Costume

C’mon all you superhero-obsessed girls, it’s time to put down your comics and start perusing our costumes! If you and your twin-flame love to bury your noises inside of the brightly colored pages of DC comic books, then you two will love suiting up in Batman and Robin costumes. You’ll have fun patrolling the school halls, pretending to protect Gotham streets. This BFF costume is perfect for those who love doing everything with their sidekick! (These are also some incredibly cute Halloween costumes for best friends!)


4. Poison Ivy and Harley Quinn Costumes

Poison Ivy and Harley Quinn Costumes

Harley Quinn Costume Lethal Beauty Costume

You and your bestie are undeniably tough cookies who have a pretty intricate relationship because you’ve been by each other’s side for years! If you and your gal-pal like to play harmless pranks and get into a little bit of trouble every so often, then you’ll love dressing as Poison Ivy and Harley Quinn. This costume idea is especially perfect for a brunette and a red-head!


5. Lilo & Stitch Costumes

Lilo and Stich Costumes

Lilo CostumeStitch Costume

Kids and their pets are always adorable. However, we'll never forget the special relationship between Lilo and Okay, so maybe she accidentally adopted an alien, but Stitch is so cute! While the two of you might not be small enough to share a tricycle ride around town, you can always crank your favorite Elvis tunes and dance!


6. Scooby-Doo Costumes: Daphne and Velma

Daphne and Velma Costumes

Plus Size Daphne CostumeVelma Costume

We've got some work to do now! These super sleuths have a mystery to solve, and you can help them out with these Scooby-Doo costumes. Scooby and Shaggy might be the iconic duo on the show, but we have to give it to the girls here. After all, where would Mystery Inc. be without Velma and Daphne? Daphne is the brains of the outfit, but Daphne's charm allows her access to people and places important to their cases. Don't forget a magnifying glass!


7. Power Rangers Costumes: Yellow and Pink Rangers

Yellow and Pink Power Ranger Costumes

Yellow Ranger CostumePink Power Ranger Costume

You two are never ones to play the damsels in distress. On the contrary, you guys have been kicking butt together since kindergarten! Needless to say, you and your homegirl have grown up to become “teenagers with attitude.” You two will have fun morphing into the Yellow Ranger and Pink Ranger and then reliving your childhood days. Go ahead, pretend to hunt down Rita Repulsa. We won't judge!


8. Powerpuff Girls Costumes

Powerpuff Girls Costumes

Blossom CostumeButtercup CostumeBubbles Costume

you might be close like sisters, but even soul sisters can rock a Powerpuff Girls costume! As you may know, the leader of the group is Blossom, while Buttercup is the tomboy. Then there's Bubbles, the silly one with an adorably bubbly personality. Does this describe your friend group to a T? Even if it doesn't, you'll all look adorable in these Powerpuff Girl costumes.


9. Grease Costumes: Sandy and Rizzo

Grease Costumes: Sandy and Rizzo

Grease Rizzo Costume Grease Sandy Cheerleader Costume

Okay, technically Sandy and Rizzo are frenemies. However, we’d like to think their friendship blossomed after the two graduated from Rydell High. If you two love to listen to the Grease soundtrack whenever you’re on a road trip together, then you’ll love getting into character by dressing up as Sandy and Rizzo! (We can help you find Grease costumes on but you'll have to track down that classic car yourself!) After all, you guys go together like, "ramma lamma lamma ka dinga da dinga dong!"


10. Audrey Hepburn & Marilyn Monroe Costumes

Audrey Hepburn and Marilyn Monroe Costumes

Holly Golightly Costume Marilyn Monroe Costume

These two were unstoppable forces during their day and they continue to be style icons. There’s no denying that both of these women ruled the Hollywood scene just like you and your bestie rule the halls of your high school. Don the classic white dress costume to become the blonde bombshell Marilyn Monroe and wear this all-black ensemble to transform into Audrey Hepburn in Breakfast at Tiffany's!


11. Frozen Costumes: Anna and Elsa

Frozen Costumes: Anna and Elsa

Frozen Anna Costume Frozen Elsa Costume

Do you think you and your best friend should rule over Arendelle? Um, of course you should, because you ladies are definitely princesses in the making! Plus, you’ll get to spend the whole night screaming “let it go” at the top of your lungs, no matter where the night takes you. Doesn’t that sound like a dream come true? Pick up Frozen costumes online with us and you can make those dreams come true!


12. Incredibles Costumes: Mrs. Incredible and Edna Mode

Incredibles Costumes

Mrs. IncredibleEdna Mode

Do the two of you seem like you should be polar opposites? Are you a contrast of high fashion and comfortable home wear? Is one of you much shorter than the other? We could go on here, but Edna Mode and Mrs. Incredible have a fantastic friendship! After all, Edna makes costumes for the entire family—that's best friend material right there!


13. Mermaid and Sailor Halloween Costumes

Sailor and Mermaid Costumes

Plus Size Sailor CostumeMermaid Costume

We are firm believers that mermaid and sailors are best friends forever, which is why they keep this very important secret: mermaids ACTUALLY do exist! They're down there lurking in the murky waters, and one day mermaids will be discovered. Until then, you'll just have to dress up as one. We have tons of adorable mermaid and sailor costumes so you and your best friend forever can both take the plunge this Halloween. Prepare to make a splash wherever you go!


14. Pokémon Costumes: Pikachu and Ash

Ash and Pikachu Costumes

Ash CostumePikachu Kigurumi

It was shock at first sight for Ash and Pikachu. Sure, maybe their initial meet and greet didn't go as planned, but this popular pair has been pals ever since, which is why they would make a great BFF costume! Whether you're a fan of the original anime or you prefer the video game series, you know that Ash and Pikachu are absolutely inseparable. (You might need to have a Pokémon battle to determine who gets their pick of either the Ash costume or the Pikachu costume.)


15. Child's Play Costumes: Chucky and Tiffany

Tiffany and Chucky Costumes

Bride of ChuckyChucky Costume

You have to admit: Chucky and Tiffany are totally relationship goals… well, that's if you can ignore the epic killing spree the pair go on! If you and your bestie are horror movie fans who love to be freaked out, then you’ll like dressing up as the murderous doll duo who still randomly pop up in our nightmares. Get your hands on some fake weapons to amp up the scare factor. Everyone will think twice before agreeing to playtime with you two!


16. Alice in Wonderland Costumes

Alice in Wonderland Costumes

Alice CostumePlus Size Mad Hatter CostumeCheshire Cat Costume

If it weren’t for the Cheshire Cat and Mad Hatter, Alice would still be meandering around Wonderland trying to figure out what the heck to do! If you and your besties are on a mission to look enchanting, whimsical, and wonderful this Halloween, an Alice in Wonderland theme is your best bet. Outfit yourselves as Alice, the Cheshire Cat, and Mad Hatter and watch your fanciful evening unfurl right before your very eyes!


17. Finding Nemo Costumes: Dory and Nemo

Dory and Nemo Costumes

Dory CostumeNemo Costume

You two will be twinning and finning when you dress as the two cutest fishies under the sea! If you two loved watching Disney/Pixar’s Finding Nemo and Finding Dory then you’ll love dressing up as the main characters. Make sure you really swish those fins while you're rocking these Nemo and Dory costumes. Oh, and if you happen to see a really big boat out in the distance, don't go and touch it. We would hate to see you two get separated!


18. Orange Is the New Black Costumes: Piper and Alex

Orange Is the New Black Costumes

Orange Prisoner CostumeBlack Glasses

Piper and Alex have a pretty complicated relationship: sometimes they’re enemies, sometimes they’re besties, and sometimes well, they’re much more than friends! Anyway, if you two are partners in crime who can’t get enough of the juicy HBO series, Orange Is the New Black, then why not become Litchfield Penitentiary’s most popular couple? Shackle yourselves up in orange jumpsuits, and be sure to add a pair of black frame glasses for the Alex costume!


19. Shego and Kim Possible Costumes

Shego and Kim Possible Costumes

Kim Possible CostumeShego Costume

Be the most iconic pair of frenemies with these Kim Possible costumes! One of the most iconic Disney cartoons of the 2000s, Shego was one of the few supervillains who could keep up with Kim Possible. Kim Possible herself is also easy enough to DIY, but you can step it up a notch by changing your ringtone to the one on Kim's phone. What's the sitch?


20. Romy and Michele Costumes

Romy and Michele Costumes

Romy CostumeMichele Costumes

Being friends doesn't mean that you never fight. However, besties can make amends, just like Romy and Michele! Just as they discovered for themselves, it's better to be authentic than to fake your way to fame. In the end, they still managed to dress to impress. Don't forget to show off your best moves at the Halloween party! (If you can get them to play "Time After Time" by Cyndi Lauper, you can recreate the iconic scene from the movie!)


21. Mean Girls Costumes

Mean Girls Costumes

Regina GeorgeKaren SmithGretchen Wieners

On Wednesdays, we wear pink. Are you ready for some Mean Girls costumes? The core group of plastics included Regina George, Karen Smith, and Gretchen Wieners before Cady came onto the scene. They had clearly been friends for a while, as they were always well-coordinated, even down to their sexy Halloween costumes! (Poor Cady didn't get the memo.)


22. Thumper and Bambi Costumes

Thumper and Bambi Costumes

Bambi CostumeThumper Costume

Did you grow up together with your best friend? Then perhaps a Bambi and Thumper costume is just what the two of you need! After a hunter kills Bambi's mother, the naive fawn grows up under the guidance of his best friend Thumper. Their relationship throughout the movie is so adorable—and the two of you will also look adorable in these cozy onesie costumes!


We hope that this collection of BFF costumes will inspire you and your bestie. Or, dudes can check out our duo Halloween costumes for guys. Whether you want your last Halloween before college to be as memorable as possible or you two are looking to start a new Halloween tradition, all of these looks are sure to create long-lasting memories. You can also check out our couple costume selector to get more pair costume ideas for friends 'til the end!

Cady D'Ambrosio
Cady D'Ambrosio

Cady D’Ambrosio is a Copywriter at, where she writes about a variety of millennial topics and pop culture trends.

Cady has dedicated her entire life to Halloween, dubbing herself the (unofficial) Queen of Halloween. Also, she’s mastered the art of Legilimency and interactive quiz-making, now she’s hunting for the creepiest doll to serve as a conduit for her soul. Tag her on Instagram in creepy doll pics @cady_b._shady.

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