Mariah Carey Re-Ups Christmas (VIDEO) 02/10/2013 mj santilli American Idol, Mariah Carey 12 American Idol judge, Mariah Carey, re-celebrates Christmas at home while listening to her own Christmas music (at full blast!). That’s one way to deal with being home bound during a snow storm. She’s got a few V-Day decorations thrown in there for good measure.