define cosplayIllustrate costume play heart in layman's terms. Costume play refers to dressing up and pretending to be a particular character from a anime. This trend has become immensely popular amongst fans of nerd culture around the world. People meticulously create costumes and props in order to faithfully represent their favorite characters. Cosplayers commonly participate in conventions or costume play events, where they can exhibit their artistry and network with like-minded individuals who share the same passion. Ultimately, costume play is an expression of admiration and commitment for the fictional character and the love for the geek community.