Mariah Careys Merriest Christmas is a 2015 English-language Musical film directed by James Yukich. Mariah invites us to celebrate Christmas with her and her friends, and performs some classic Christmas songs. Mariah careys merriest christmas features Mariah Carey, Josh Baker, Susan Bennet, Jaeden Bettencourt, Shay Bevans, Lacey Chabert and John William Young. It was released on 19th December 2015.