Sharon Osbourne could be making her final X Factor appearance tonight after criticising fellow judge Dannii Minogue on TV this week.

Supremo Simon Cowell is said to be "spitting bullets" over Osbourne's comments to interviewer Graham Norton that Dannii was on the panel, "because of her looks, not because of her contribution to the music industry."

Sharon's claims follow recent reports of a romance between Cowell and Dannii, who is enjoying her first season on the TV talent reality show - which hosts it's grand final tonight.

A source tells the Mirror, "Simon thought what Sharon did on the show was disgusting. He only offered her a new contract last week and then she goes and does this."