The long awaited reunion of Robbie Williams and Gary Barlow has finally happened as the boys collaborate for Robbie's new single 'Shame'.

The track is the first time the former rivals have worked together for 15 years and it will appear on Williams's new greatest hits album, In and Out of Consciousness.

Click here to watch Robbie and Gary's 'Shame' video.

A cowboy themed, tongue-in-cheek video sees the boys pay homage to 'Brokeback Mountain', sending up themselves and their very public feud by portraying themselves as having secret feelings for on another.  

Looking into each others eyes in an American saloon, they sing: "I don't recall the reasons why/I must have meant them at the time/Is this the sound of sweet surrender?"

"What a shame we never listened/Told you through the television".

Shame is released on 4 October.