Miley Cyrus has unleashed an unprecedented verbal attack on celebrity blog sites, branding them complete "trash" and a bad influence on children.

At a press conference in London for the release of Hannah Montana: The Movie, Miley proceeded to lay into the gossip sites which regularly feature tid bits on the teen queen's celebrity lifestyle.

Miley said: "I think they're hard on the celebrities featured but the kids that go on there as well.

"I'm a normal girl and if I was any smaller, I'd be 'too skinny' and if I was any bigger I'd be 'too fat', there's never perfection."

She added: "But if the sites show pictures of me on the red carpet and then kids think 'that's what you're supposed to look like', I think it gets people mixed up. Not only the celebrities, but the kids reading it as well.

"I think it's all trash."

See Miley Cyrus: From Child Star To Cover Girl below