Ozzy Osbourne's wife SHARON has been proposed to on the set of hit UK TV talent show The X Factor by a contestant.

The rock matriarch judges auditions alongside music moguls Simon Cowell and Louis Walsh on the hit show but 24-year-old SIMON WALKER's efforts to impress her broke all previous boundaries, as he offered her his ring.

And while the happily-married redhead politely declined his offer, Walker passed his audition with flying colours.

Walsh said, "I like your courage, proposing to a married woman, so I'm going to say yes."