The breasts are lifted. If there is volume loss from pregnancy and breast feeding, this can be remedied with the addition of a breast implant. Alternatively, if the breasts are excessively large and causing discomfort, the size may be reduced. In an abdominoplasty, the abdominal muscles are tightened to strengthen the midsection and narrow the waist. Lastly, the excess lower abdominal skin with stretch marks is removed.