Warning: if you're not feeling very festive today, this probably isn't the video for you.
However, if you can face Mariah Carey and Justin Bieber swooning over a puppy and singing All I Want for Christmas is You, then you'll probably find yourself humming along with the strangely paired duo. Watch the video above for some full-on Christmas cheer and let us know how Mariah and Justin compare to the Victoria's Secret girls singing Jingle Bells.
Don't forget to pull open a cracker in our advent calendar today for your chance to win some very stylish Christmas presents!
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