Breast augmentation is a surgical procedure to enhance or enlarge natural breast size and shape through the use of a saline filled or silicone-gel filled implant. Most often, it is sought by women who, for personal reasons, feel that their breasts are too small. It can also improve the slight drooping that frequently comes as a result of pregnancy, fluctuations in weight, gravity and natural aging. For some women, breast augmentation is sought to correct a noticeable difference in size between the two breasts.