Mariah Carey Called Champagne Fattening — Is She Right? [2] When Mariah Carey tried to get out of a champagne toast with Ellen DeGeneres as a guest on Ellen, she initially reacted to the host's persistence by exclaiming that champagne is fattening. When Ellen proceeded to hand her a glass of bubbly to toast to Mariah "not being pregnant," Mariah tried another route and said that it was too early in the day for alcohol.