The size of the chest is not only influenced by genetic factors, but also closely related to diet and influence. Adolescent girls are in a period of physical development, so we should keep enough protein. Lipid intake can ensure breast development, which is very important for breast enhancement. Therefore, in the usual diet, we should eat more soybeans and peanuts rich in phospholipids, as well as almonds, walnuts and sesame seeds rich in protein.