Singer is new weight loss spokesperson Singer and mother of twins Mariah Carey has signed on to be the new spokesperson for a popular weight loss program mariah carey jenny craig spokeswoman . Carey credits the program's eating and exercise plan with helping her lose some of her baby weight. Mariah Carey Weight Loss , Mariah Carey reveals 70-pound weight loss six months after having twins, credits Jenny Craig. The new mom has been named the new Brand Ambassador of the Jenny diet plan. Mariah Carey is singing the praises of Jenny Craig since losing 30 pounds on the weight loss system after giving birth to twins six months ago. And the love is mutual! The 42-year-old songstress has been named the new Brand Ambassador of the Jenny diet plan (formerly Jenny Craig). “ Mariah Carey started on Jenny in late July following the birth of her twins Monroe Cannon and Moroccan Scott Cannon in April, and is taking this public journey to shine a spotlight on the importance of maintaini...