Define costume play heart in simple terms. Costume play is all about dressing up and pretending to be a particular character from a movie. This trend has a huge sensation amongst enthusiasts of nerd culture around the world. Fans diligently create costumes and props that accurately reflect their favorite characters. Costume players often participate in events or costume play events, where they can display their artistry and network with others who share the same passion. In the end, costume play is an manifestation of admiration and commitment for a fictional character and the love for the nerd community.