Perhaps the best way to shape a tummy, when diet and exercise will not work, may be a procedure called Abdominoplasty. Commonly referred to as a tummy tuck, this procedure involves an operation to removed excess skin or fat and possibly even tightens up or brings the abdominal muscles closer. Some tummy tucks are a simple operation that involves reshaping the skin on the stomach. While more invasive surgery may include removal of fat under or above the muscle wall, repositioning the belly button, and even stitching the muscles together.