Britney and Heidi To Duet!
The Hills biggest star and Spears are on a new track together...
The mystery track 'Britney Spears and Heidi Montag on his US radio show yesterday morning!
So far Britney's camp are denying the duet rumours saying Brit didnt authorise the release with her vocals.
With Heidi's debut single 'Higher' getting slammed by audiences, the attempt of a come back with the Princess of pop is starting to smell a bit like a publicity stunt.