As the mermaid from Splash in New York City — boyfriend Kanye West was her captain!
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Diddy
As Prince in Los Angeles
Credit: Broadimage/Shutterstock
Paris Hilton
As a midriff-baring fairy in Beverly Hills
Credit: Broadimage/Shutterstock
Christina Aguilera
Clad in all-black at a bash with boyfriend Matthew Rutler at her home in Beverly Hills
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Aubrey O'Day
As a sexy indian in Hollywood
Credit: Broadimage/Shutterstock
Christina Milian
Dressed up as a cupcake, Milian celebrated the launch of her custom Halloween cocktail recipe for HPNOTIQ Liqueur at Beacher’s Madhouse in Los Angeles.
Credit: Henry Lamb/Photowire/BEI/Shutterstock
LaLa Anthony
As a sexy cat in New York City
Credit: Broadimage/Shutterstock
Scott Disick
As an ax murderer in Las Vegas
Credit: Broadimage/Shutterstock
JWOWW
As a nerd in Las Vegas
Credit: Broadimage/Shutterstock
Stacy Keibler
In a sexy black masquerade ensemble in Las Vegas
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Emma Roberts
As Aunt Julia Roberts' character in Pretty Woman alongside boyfriend Evan Peters in Los Angeles
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Julianne Hough and Ryan Seacrest
As Bonnie and Clyde in Los Angeles
Credit: Twitter
Hugh Hefner and Crystal Harris
As a vampire and vampire bunny
Credit: therealsarahhyland/ Instagram
Sarah Hyland and Matt Procop
As TJ and Spinelli from Disney's Recess
Credit: Instagram
Rachel Zoe and Rodger Berman
As a flapper and vampire
Credit: hollymadison/ Instagram
Holly Madison
As Alice in Wonderland's Cheshire Cat
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Fergie and Josh Duhamel
As model/actress Angelyne and filmmaker Dennis Woodruff in Beverly Hills
Credit: JessicaAlba/ Twitter
Jessica Alba and Family
As The Incredibles
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Kate Walsh
As a tiger in Beverly Hills
Credit: laurenconrad/ Instagram
Lauren Conrad
With boyfriend William Tell
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Seal
As a Boston Celtics player in Hollywood
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Hilary Duff
Donning intense skeleton makeup in tribute to Dia de los Muertos (Mexican Day of the Dead) with husband Mike Comrie in Beverly Hills
Credit: Chord Overstreet/Instagram
Chord Overstreet
As Brad Pitt
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Matthew Morrison and Renee Puente
As Justin Timberlake and Britney Spears
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Shenae Grimes
Dressed as Monster High's Frankie Stein, Grimes attended Matthew Morrison's 3rd Annual Halloween Party on Oct. 28 in Los Angeles with boyfriend Beech.
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Kyle Richards, Mauricio Umansky, Kim Richards
Real Housewives of Beverly Hills stars Kyle Richards, husband Mauricio Umansky, sister Kim Richards and their kids attened the sCare Foundation's 2nd Annual Halloween Benefit at The Congo Room at L.A. Live in Los Angeles on. Oct. 28.
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Darren Criss
As Moonrise Kingdom's Sam
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Chris Colfer and Ashley Fink
The Glee stars dressed up as a Llama Assassin and grapes for Matthew Morrison's Halloween Party
Credit: Shay Mitchell/Instagram
Ashley Benson and Shay Mitchell
The Pretty Little Liars stars dressed up as Tweedledee and Beyonce'sAustin Powers character, Foxxy Cleopatra.
Credit: Lucy Hale/Instagram
Lucy Hale
The brunette beauty dressed as a colorful unicorn.
Credit: Twitter
Deryck Whibley and Ari Cooper
Awkward! Whibley went as ex-wife Avril Lavigne. Meanwhile, Cooper dressed as Lavigne's fiance Chad Kroeger.
Credit: Twitter
Miley Cyrus
As Nicki Minaj and her friend as a Toddler and Tiaras star
Credit: Twitter
Jessica Simpson, Eric Johnson and baby Maxwell
Simpson as a sexy milkmade, Johnson in a Scottish Braveheart costume and Maxwell as a chicken
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Isla Fisher
As a Sock Monkey in Beverly Hills
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Patrick Schwarzenneger
As Jesus
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Aly and AJ Michalka
As the Black Swan and Goldilocks
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Adam Lambert and Sauli Koskinen
As "glampires"
Credit: Splash News
Alessandra Ambrosio and Jamie Mazur
In military and western costumes
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Ellen DeGeneres
As actress Sofia Vergara
Credit: Twitter
Eddie Cibrian and Leann Rimes
Dressed as Danny and Sandy from Grease.
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Rupert Sanders and Liberty Ross
took their kids treat or treating.
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Sandra Bullock and Louis
as Jessie and Buzz Lightyear
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Jennifer Lopez and Casper Smart
as hippies
Credit: Instagram
Chris Brown
as a taliban soldier
Credit: Splash News
Katy Perry
The singer dressed up as Jane from Daria at the Patron XO café presents the 8th annual Maroon 5 Halloween Party on Oct 31.
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