Sharon Osbourne has attacked Nicole Kidman - saying she has a forehead "like a flat screen TV."

The outspoken "America's Got Talent" judge launched a tirade against the actress while hitting out at celebrities who refuse to admit to having plastic surgery, branding them "lying b***hes."

Cheryl Cole thinks Madonna should "tone it down in the crotchal area" as she turns 50 tomorrow.

The Girls Aloud star - who is a judge on U.K. TV talent show "The X Factor" - believes the "4 Minutes" singer might need to cover up on stage once she reaches her landmark birthday.

Sharon Osbourne has branded Paris Hilton talentless. The 'America's Got Talent' judge says the socialite only became famous because the "timing was right" - and believes Paris would agree with her appraisal.

She said: "You've got your superstars. You've got your celebrities. And then you've got your people who I call 'infamous', like Paris Hilton, who I know."