A variety of factors play a role in sagging of the breasts like genetics, weight fluctuations, pregnancy and/or breast-feeding. These can cause the breast tissue to involute or shrink as the milk-producing glands shut down. The breasts have suspensory ligaments, called Cooper’s ligaments, which support the breast tissue and hold it up. As the breasts grow larger, the ligaments are stretched and they lose support. The same is true for the skin. If the dermis is damaged, stretch marks appear. When women are young, their breast tissue is very dense and heavy. This puts excess strain on the skin and the ligaments. The larger the breasts and the faster they grow, the more quickly and noticeable the sagging will be. Sagging results in a wider breast that is elongated in shape with a nipple-areola complex that is at the lowest part of the breast and may even point downward.