Christina Aguilera turned heads on the American Music Awards' red carpet for two years in a row. Photos: Celebrity transformations Oprah Winfrey is not just a stakeholder in Weight Watchers, she's a client. In June the mogul reportedly hopped on a call with some other members to share how she dropped 30 pounds. "Just tried a new diet/training program called 'Lost At Sea.' Winfrey has lost 30 pounds and reportedly recently told a few fellow Weight Watchers members that having a weight loss buddy has made all the difference.