Rock matriarch Sharon Osbourne has blasted socialite and TV-star Paris Hilton - branding her talentless.

And Osbourne has banned the 27-year-old socialite from her hit U.S. show America's Got Talent, insisting Hilton couldn't compete with other contestants.

Osbourne says, "She has no talent. I'm sure Paris would tell you that herself. She's got a look that a lot of younger girls liked and copied."

"The timing was right for her. A lot of younger women looked up to her. She's very sweet, nice girl. But that's it. Then you put a full stop. It's over. So I'd say Paris is infamous."