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.
Far out! The Modern Family star wore an all-yellow outfit with some psychedelic sunglasses with her son Oliver, who was dressed as "Gangnam Style" singer PSY, around their Los Angeles, Calif. neighborhood on Oct. 31, 2013.