Many celebrities have undergone dramatic transformations due to weight loss bariatric surgery. Carnie Wilson underwent a gastric bypass in 1999 and often discusses her surgery during interviews. A gastric bypass procedure creates a small stomach pouch, then attaches the smaller pouch to the intestines allowing food to bypass the duodenum. In the same year, Sharon Osbourne had a lap band procedure performed after battling obesity all her life. A silicone belt or collar is placed around the upper part of the stomach in a lap band procedure, resulting in a stomach that will hold only a small amount of food.