Definition of costume (or wardrobe) and costume design

refers to the garments or clothing worn by actors/performers in a film; a costume (or wardrobe) designer researches, designs, and selects the costumes to be appropriate to the film's time period, the characters, their location, and their occupations, whereas thecostumer (or stylist) is responsible for acquiring, selecting, manufacturing, and/or handling the clothing and accessories; acostume drama is a film set in a particular historical time period, often with elaborate costuming