The squat is done by placing your feet shoulder width apart and bending down in a squat, making sure your knees do not go over your toes. Do these slowly, going down and then raising up. For added strength, hold a bar or light weights while you squat. Increase weight as you progress. Do 12 repetitions of three sets every other day, for fast results.
Lunges are also excellent for shaping the buttocks.
Make sure the knee does not go over the front toes. Holding weights can throw you off balance at first so start without weights and slowly work up to light weights. Walk across the floor in a lunge position, using first one leg, then the other. Your body will raise up slightly as you change legs. Do a series of 12 repetitions of three sets.