Dress-up, or costume play, involves wearing clothing and accessories that represent a character, theme, or concept. This activity is popular among children, who often engage in imaginative play by dressing as their favorite characters from movies, books, or superheroes. Adults also participate in dress-up during events like Halloween, themed parties, or cosplay conventions. Costumes can range from simple outfits made at home to elaborate ensembles purchased from stores. They often include props, makeup, and wigs to enhance the overall appearance. Dress-up encourages creativity, self-expression, and social interaction, making it a fun activity for people of all ages.