Beyonce
For her role in Dream Girls, Beyonce lost weight with a master cleanse routine, that consisted of drinking a daily potion of lemon water, cayenne pepper and maple syrup–and nothing else. The singer dropped 20 pounds for the role. Master cleansing is considered a crash diet and roundly frowned upon by nutritionists because the weight gain will return immediately once the dieter consumes food. Beyonce slimmed down after the birth of Blue Ivy with exercise and she says, eating six small meals daily.