Mariah Carey Joins Justin Bieber’s Christmas Ensemble

Justin Bieber has announced another mystery guest on his already star-studded Christmas album "Under the Mistletoe."

With an album that already includes Justin Bieber, Boyz II Men, The Band Perry, Usher, and Busta Rhymes, it has been announced that Mariah Carey will duet with Justin on a remake of her Christmas classic "All I Want For Christmas is You."

Personally, I am happy to hear this as "All I Want For Christmas is You" is my favorite Christmas song AND because all I want for Christmas, ironically, is Justin Bieber.