Mariah Carey has undergone 'gastric sleeve surgery to lose weight after she found dancing difficult and was fed up of being shamed. The surgery reduces the amount of food allowed into the stomach, making the patient feel fuller faster so that they consume less. According to

Page Six, the All I Want For Christmas Is You songstress was first motivated to lose weight after noticing her extra pounds 'made it harder to dance'. Then she started 'getting a lot more criticism online from body shamers.' Check out video below