Kendall Jenner dresses as Powerpuff Girl for Halloween-themed birthday bash: Pics!

Buttercup birthday girl! Kendall Jenner celebrated her 22nd birthday three days early on Tuesday night, throwing a Halloween-themed bash at Delilah in Los Angeles, California.

The supermodel stepped out as the Powerpuff Girl Buttercup in a neon green, black bra top and mini-skirt with thigh-high boots and a black bob wig. 

Kendall Jenner and Hailey Baldwin at Halloween bash
Photo: Backgrid

She was joined by model pal Hailey Baldwin, who dressed as Bubbles.

Many stars came out for the festive bash, including Kendall’s older sister, Kourtney Kardashian, and her boyfriend Younes Bendjima, who dressed as Bonnie and Clyde for the soiree. 

Kourtney Kardashian and Younes Bendjima as Bonnie and Clyde
Photo: Backgrid

MORE: Kim Kardashian Rocks Selena Quintanilla Costume That’s Almost Identical to Demi Lovato’s: Watch!

Kendall’s sister, Kim Kardashian, also dressed up for Halloween, rocking a Selena Quintanilla costume on social media. And Kylie Jenner also sported a bold look, dressing like an angel to her pal Jordyn Woods’ devil.

See more celebrity Halloween costumes from this year:

49 PHOTOS
Celebrities' Halloween costumes 2017
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Celebrities' Halloween costumes 2017
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Ariel Winter attended Matthew Morrison's 8th Annual Halloween party presented by PAC SUN and Podwall Entertainment at The h.wood Group's Poppy over the weekend.

(Credit: Vivien Best)

Willie & Waylon #Halloween2017
You’re Welcome
Happy Halloween https://t.co/rwEwQWwLyw
Lost rehearsal footage of Milli Vanilli #HappyHalloween https://t.co/TCa2RymZYP
#Halloween #HAUS Edward Scissorhands 🖤✂️ https://t.co/FvHHVenDYd
Happy Halloween! #copacabana
Happy Halloween everyone!! - KU https://t.co/1I6T0tQnFm
Halloween 2017 🎃
Spidey's girl 🕷🐾🖤 HAPPY HALLOWEEN from #FeliciaHardy, The Black Cat xx 🎃
Happy Halloween! / Joyeuse Halloween! - Team Céline 😱🎃 📸 @denisetruscello
The only deer I am OK with @mfisher1212 “catching!” 😝🦌 @catchindeers #HelpMe #happyhalloween #veganwifeproblems
The toast to my avocado... Happy Halloween everyone! 👻🔮
Would it help if I got out and pushed? @donslens
🎃 #Halloween #squad #RHONJ 🎃 #aboutlastnight @lysasimpson @melissagorga @danielle_staub @christinerivera13
tad n chad
Sonny & Cher #HalloWKKWeen https://t.co/nXStzZnrTs
Happy Early Halloween & Happy Birthday Gorgeous ❤️
Academy Awards 1991
LOS ANGELES, CA - OCTOBER 27: Amal Clooney, Rande Gerber and Cindy Crawford attend Casamigos Halloween Party on October 27, 2017 in Los Angeles, California. (Photo by Alberto E. Rodriguez/Getty Images for Casamigos Tequila)
Don’t tell me it’s a Fancy dress Party! Poison Ivy came out early this year! P.s performing in this wasn’t that easy! Lol #anywhere #kisshousepartylive
A little game of cat and mouse last night 😻
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NEW YORK, NY - OCTOBER 28: Paris Hilton and Nicky Hilton Rothschild attend amfAR & The Naked Heart Foundation Fabulous Fund Fair at Skylight Clarkson Sq on October 28, 2017 in New York City. (Photo by Kevin Tachman/amfAR2017/WireImage)
#strangerthings have happened #happyhalloween
Everyone else can go home Demi Lovato just won Halloween https://t.co/W6G6QuDYgF
And from the front. #hedwigandtheangryinch 💋
#juno #happyhalloween @kellysawyer and I 👫
Nas, dressed as Richard Pryor, attended a bash at Goldbar where the crowd enjoyed themed cocktails made with Tequila Don Julio.
If she doesn't scare you no evil thing will... I’m sharing this years halloween costume on laurenconrad.com today 👻🎃🕷
When your daughter demands you BOTH be ELSA for Halloween...you GRIN AND FORKING BEAR IT. #halloween
Woooooooooo https://t.co/Z7eEHyOYDl
Baby Girl Aaliyah https://t.co/5GUHkNJgNi
I'll be looking for one of these today. #icrackmyselfup
1st rule of fight club.
Strangé & Eddie
✨✨Satine✨✨ https://t.co/nfl8a0lJus
LOS ANGELES, CA - OCTOBER 27: Derek Hough (L) and Hayley Erbert attend Casamigos Halloween Party on October 27, 2017 in Los Angeles, California. (Photo by Michael Kovac/Getty Images for Casamigos Tequila)
Kendrick Lamar as Jesus Christ.
Imperfection is beauty, madness is genius and it's better to be absolutely ridiculous than absolutely boring. - Marilyn Monroe
STRANGER THINGS SEASON 2! There are two Eleven’s in town 👣 Thank you @Lyft for giving me a the most radical free ride and for sharing my love of this brilliant show. #lyftstrangemode
FREAKSHOW 📸 @eliastahan
The party was hoppin’ last night 🎃 #halloween #squad #lanights #RnB #bachelornation
Let the Halloween festivities begin! 🎃👻💀
PHILADELPHIA, PA - OCTOBER 28: Actresses Sarah Paulson and Holland Taylor are seen arriving at film director M. Night Shyamalan's Halloween party 'Shyamaween' on October 28, 2017 in Philadelphia, Pennsylvania. (Photo by Gilbert Carrasquillo/GC Images)

Paris Hilton attends treats! Magazine's 7th Halloween Party in Partnership with Rolls-Royce Black BadgeAbsolut Elyx, & Perrier Jouet on October 31, 2017 in Los Angeles, California.

(Photo by Gabriel Olsen/Getty Images for Treats Magazine )

EJ Johnson, Magic Johnson's son, stunned as Daenerys Targaryen from “Game of Thrones" at the fnktion launch debut.
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