Jennifer Lopez inspired Mariah Carey’s weight loss. It was rumored that Mariah Carey had undergone secret gastric sleeve surgery last November. Since then, the weight has really been coming off. A source close to Mariah said it was rival Jennifer Lopez that really made her take the next step. Mariah apparently looked at Jennifer Lopez, someone who is the same age as her, and saw how she still looked great, which was just the inspiration that she needed. Mariah Carey has lost a total of about 50 pounds so far. Read here.