Your breasts go through a series of changes while you are pregnant so that you can breastfeed your child, with the most visible change being breast enlargement. Though your breasts should decrease in volume once you are done nursing, they may not necessarily be the same size they were before your pregnancy. Moreover, your skin that stretched to fit over your larger breasts may not retract, which then causes your breasts to sag lower on your body. Procedures like breast lift and breast augmentation are the best ways to elevate and achieve a specific size and shape to your breasts.