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.
Ellen's busting out! Ellen DeGeneres showed some major (fake!) cleavage as she dressed as Nicki Minaj for Halloween. The talk show host donned the same outfit the rapper wore during a previous taping on the Ellen DeGeneres Show.