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At an elit by Stoli event, Beyonce was all the buzz at Anja and Kanye West's gypsy themed Halloween bash at The Darby in NYC.
Kerr works her seductive magic in at CATCH roof in New York City.
Michelle Trachtenberg makes Tim Burton proud as she at The Darby in New York City.
Fergie channels little Eden at Heidi Klum's 12th annual Halloween party in New York City.
Seal & Heidi Klum
Heidi and her hubby go ape!
Nina Dobrev made an adorable Hermione.
Kelly Osbourne & Joan Rivers
Kelly Osbourne and Joan Rivers looked hilarious as Jennifer Lopez and Suri Cruise.
Jessica Alba & Cash Warren
Jessica Alba had some fun as a witch.
Carmen Electra showed off her curves as Catwoman.
Eli Roth & Olivia Munn
Olivia Munn looked cute as Vicki from Small Wonder, while Eli Roth was perfect as Fight Club's Tyler Durden.
Sofia Vergara was an "Angry Bird".
Julianne Hough & Derek Hough
Julianne Hough was perfectly pretty as Poison Ivy.
Kim Kardashian made a very sexy Poison Ivy.
Minday Kaling & Ellie Kemper
The Office stars Mindy Kaling and Elli Kemper looked super-cute as a giraffe and a Ghostbuster.
Alessandra Ambrosio made an elegant Swan Queen.
Lea Michele channeled Natalie Portman as the Swan Queen.
Zachary Quinto got creative in his "fireworks on the 4th of July" get-up.
Candice Accola & Lucy Hale
Lucy Hale showed off her inner pageant queen in her Toddlers & Tiaras costume.
Jersey Shore star Nicole "Snooki" Polizzi clawed her way into PURE nightclub in Las Vegas on Saturday.
Actress Chloe Moretz was cute without a costume at Disneyland on October 24.
Alex McCord and Simon Van Kempen
The Real Housewives of New York star Alex McCord posed with living dead husband Simon van Kempen at the 2011 Pop Art Halloween Party on October 29.
A dapper David Arquette tweeted this pic Saturday night.
Actress Morgan Fairchild went glam for the 2011 Pop Art Halloween party in New York on Saturday.
Jwoww and Roger Matthews
Jersey Shore stars Jenni "Jwoww" Farley and beau Roger Matthews wore matching gangster outfits at Chateau Nightclub & Gardens in Las Vegas over the weekend.
What the Celebs Wore for Halloween
From sexy kitties to gangster guidettes, we've compiled the best celebrity costumes for Halloween this year. Click through to see how creative your favorite celeb got with their wardrobe selection.