Transparent models require that the body must meet the standard. The requirements for the model's bust, waist, hip, neck, upper and lower body ratio, breast position, etc. are very strict, but there are no requirements for appearance. Their skill is the high level of clothing appreciation and the problem of accurately representing the clothing being tried on. A good fitting model can also suggest popular possibilities based on experience. They are good advisers to fashion designers. The Ninth Avenue fitting models are smart, good, and fit the criteria of a fitting model.