Why do models wear two sets of display tops?

Two sets of models are needed to show the tops, so that the clothes can better show their own characteristics, and at the same time avoid wrinkles, wrinkles and other unsightly situations when wearing clothes. Model, which originated from the transliteration of English "model", mainly refers to the business of displaying fashion products, assisting media advertisements, serving the aesthetic needs of the public, and expressing the artistic concept of photography.