Island Def Jam
During the filming on the video, Carey was eager to show off her newly-svelte figure, as is evidenced by the barely-there Santa costume she sports throughout. Justin, on the other hand, was excited to show off his new, lower-singing voice, which supposedly dropped right before recording the duet with Mariah.
Check out Justin and Mariah's new Christmas classic below, then compare to Carey's original video posted just under it. Enjoy and happy holidays!
Watch Justin Bieber & Mariah Carey's 'All I Want for Christmas Is You'