Answer:
The book that holds all the information for a production costume design is typically referred to as the "costume bible" or "costume plot." It serves as a comprehensive reference guide that contains detailed information about each character's costume, including descriptions, sketches, fabric swatches, measurements, accessories, and any necessary notes for the production team. The costume bible helps ensure consistency and accuracy in costume design throughout the production and serves as a valuable resource for costume designers, costume supervisors, wardrobe departments, and other members of the production team involved in the costuming process.