It's that time again! Some of the biggest names in Hollywood stepped out to celebrate Halloween 2013, dressed as film characters, other A-listers, comic superheroes and much more! Check out some stars -- including Hilary Duff, Vanessa Hudgens and John Stamos -- who went the extra mile to get decked out for some of the biggest Halloween parties of the season.
Lisa Stelly and Jack Osbourne
Winnie and Minnie! Jack Osbourne and his wife Lisa Stelly went as Winnie the Pooh and Minne the Mouse for Halloween as they attended Derek Hough's Halloween Party at Hooray Henry in L.A. Oct. 30.
Credit: All Access Photo / Splash News