Outspoken rock spawn Kelly Osbourne has launched a vicious attack on Lady Gaga, insisting the pop sensation "has everything" but an attractive face.

Osbourne, the daughter of former Black Sabbath rocker Ozzy Osbourne, admits the "Poker Face" star is talented - but thinks her face isn't much to boast about.

She rants, "She's a Butter Face - she has everything 'but her face.' She reminds me of Peaches Geldof."

And the 24 year old is urging the singer to focus on her music rather than airing her views in the media: "I love Lady Gaga's tracks but I just wish she'd keep her mouth shut. She talks way too much and has too much attitude. It's starting to make me go off her."

Kelly Osbourne Gallery

(This news article provided by World Entertainment News Network)