Mariah Carey treated her fans to a special surprise at the weekend. She brought Jennifer Hudson and Ariana Grande on to the stage to perform 'Oh Santa!'.
Mariah Carey Welcomes Ariana Grande, Jennifer Hudson to the Stage for Oh Santa! in New York yahoo.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from yahoo.com Daily Mail and Mail on Sunday newspapers.