Who knew a Santa suit could be so sexy?
The song, a new version of Mimi's 1994 hit, finds the mother-of-twins singing, posing and looking seductively into the camera at a department store while the Biebs bops around with some pals.
It all eventually turns into one big party as Mariah and Justin are seen handing out presents...and getting a wee bit flirty with each other!
So what do you think? Naughty or nice?