Costume contests are events where participants dress up in creative outfits, often based on themes like Halloween, movies, or fantasy characters. Contestants showcase their costumes to judges or an audience, who evaluate them based on criteria such as originality, craftsmanship, and overall presentation. These contests can take place at various venues, including comic conventions, Halloween parties, and themed events. Prizes may be awarded to winners in different categories, encouraging creativity and fun. Participants of all ages can join, making costume contests a popular activity for families and friends to enjoy together.