48 Halloween Costumes Celebrities Wore This Weekend

    For inspiration — or just a laugh.

    Fergie and Josh Duhamel

    Nicole Richie

    Jeremy Piven

    Hugh and Crystal Hefner

    Kelly Osbourne

    Vanessa Hudgens

    Adam Lambert, Lance Bass, Michael Turchin, Jai Rodriguez

    Chris Colfer

    Ryan Seacrest

    Rachel Zoe and Rodger Berman

    Larry David

    Isla Fisher and Sacha Baron Cohen

    Martha Stewart

    Cindy Crawford

    John Stamos

    Leonardo DiCaprio

    Hilary Duff and Mike Comrie

    Goldie Hawn

    Kurt Russell

    David Spade (as Terry Richardson)

    Molly Sims

    Snooki and JWoww

    Naya Rivera

    Brody Jenner

    Ashley Madekwe and Iddo Goldberg

    Michelle Trachtenberg

    Maksim and Val Chmerkovskiy

    Francesca Eastwood

    Maitland Ward

    Stephanie Pratt

    Nicky Hilton

    Tim Allen

    Lea Michele

    David Arquette

    Sandra Bullock

    Jessica Lowndes

    Hal Sparks

    Sean Penn

    Alessandra Ambrosio

    Ian Ziering and Erin Kristine Ludwig

    Kelly Brook

    Paris Hilton (as Miley Cyrus)

    Bradley Cooper and Suki Waterhouse

    Kristen Chenoweth and Jake Pavelka

    Neil Patrick Harris and David Burtka

    Derek Hough

    and...Julianne Hough.

    Jessica Alba