A tummy tuck, also known as abdominoplasty, is a cosmetic surgery that improves the appearance of the midsection. Excess skin and fat are removed from the middle and lower belly to tighten the muscles and fascia. This procedure flattens the stomach and defines the waistline. A tummy tuck can significantly enhance the overall figure as an add-on surgery to a thigh lift. These body contouring procedures complement one another for a more comprehensive reshaping.