Mariah Carey is re-recording her song All I Want For Christmas with Justin Bieber. Photo / Supplied
Mariah Carey has been unveiled as a special secret guest on Justin Bieber's Christmas album.
The Baby singer has worked with high-profile stars on a selection of duets for the festive record - including Busta Rhymes, Boyz II Men, Usher and The Band Perry - but had kept the identity
of the superstar from everyone, even his producer Tricky Stewart, until he made the announcement after a series of tantalising tweets.
He wrote: "oh yeah...didnt I promise everyone I would tell them who my last special guest is on my Christmas album #UnderTheMistletoe ??? #nov1st
"I mean we know we got my big bro @UsherRaymondIV and@thebandperry and @BusaBusss and @BoyzIIMen on the album but who is the last guest???
"who is the living legend that I got on the album???? #UnderTheMistletoe #Nov1st
