Costume
Cosplay

Cosplay, a word of Japanese origin that in English is short for "costume display" or "costume play", is a performance art in which participants wear costumes and accessories to represent a specific character or idea that is usually always identified with a unique name (as opposed to a generic word). These costume wearers often interact to create a subculture centered on role play, so they can be seen most often in play groups, or at a gathering or convention. A significant number of these costumes are homemade and unique, and depend on the character, idea, or object the costume wearer is attempting to imitate or represent. The costumes themselves are often artistically judged to how well they represent the subject or object that the costume wearer is attempting to contrive.
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