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.
Not your average grandma! Model and actor Colton Hayes dressed up like a senior citizen on the town -- complete with something scary (and hairy) coming out of his granny panties -- for Matthew Morrison's Halloween party on Oct. 26 at Warwick Nightclub in Hollywood.