Naked Williams stuns X Factor contestants

Robbie Williams greeted 'The X Factor' contestants at his Los Angeles house naked except for some strategically placed palm leaves.

The 'Rudebox' singer has joined the ITV1 show as a guest mentor to help his Take That bandmate and 'X Factor' judge Gary Barlow whittle his eight hopefuls in the boys category down to four but both Gary and the contestants were shocked with Robbie's prank at his home.