A functional costume is a type of clothing used in film and media that not only serves the purpose of dressing characters but also enhances the storytelling by reflecting their personality, status, or the environment they inhabit. This type of costume is designed to support the narrative while also being practical for the actor's movement and actions within the scene. By integrating style and function, these costumes contribute significantly to the mise-en-scรจne, working alongside setting, lighting, and makeup to create a cohesive visual experience.