NEW MUSIC: Justin Bieber & Mariah Carey - All I Want For Christmas Is You RMX!

A song that was released when the Biebster was less than one, he is now singing alongside Mariah Carey on her Christmas hit 'All I Want For Christmas Is You'.

This super festive remake features on his festive album Under The Mistletoe, stays true to the original, with Mariah opening the song and the teen idol coming in on the second verse.

Is this a good collaboration or did Justin ruin it for you? Let me know what you think.