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.
Revenge of the sumo wrestler! British star Josh Bowman hid his chiseled abs underneath a sumo wrestler costume with a friend at Matthew Morrison's Halloween party sponsored by Dos Equis on Oct. 26. What a cruel Halloween trick!