I had both full 'tummy tuck' which I'm told is lipo and stitching all my stomach muscles back to where they belong. I had 3 kids and no matter how much weight I lost the stomach never really improved. The last pregnancy was the worst - stretching me beyond belief.
The procedure is not for the faint of heart - drains on each hip, red smiley face incision, sore hips. You cannot bend over, stand up straight or sleep normally (propped up only) for the first week. And you are super tired. But I finally have a flat waist (over 25 years). I will post a picture when my drains are removed :)