Mariah Carey announced via Twitter that she will be re-releasing her huge Christmas hit, 'All I Want For Christmas Is You', with teen icon, Justin Bieber.

The recent mother-of-twins, who has just returned to the studio, posted a video over Twitter revealing the details of the song, which she is very excited about:

"I think a lot of you are already very surprised by this and you’re going to be even more surprised when you hear it. The song sounds great. I’m very excited for everybody to hear it this Christmas and to be totally festive with our festive collabo".

'All I Want For Christmas Is You' was first released in 1994 and it is still one of the most popular Christmas songs. 

Check out the video below of Mariah Carey announcing her festive project with Justin Bieber and the video for the original song: