By: Jeffrey Wisnicki, M.D., F.A.C.S. The shape of a woman’s breast is a result of many factors – some constant, some changing over time.  Genetics and early developmental influences always play a key role and some women may have uneven, tubular-like, or “saggy” appearing breasts from puberty.  Later on, pregnancy and breast feeding may enlarge and then deflate the breasts, sometimes leaving a less than desirable contour.  A similar effect may occur after massive weight loss following a diet program or gastric bypass.   As the aging process continues, the supporting tissues continue to lose elasticity and strength and the breast may succumb to its own weight.  Unfortunately, there are no exercises which will improve the situation.