Pirates of the Carribean actress Keira Knightley has said she could never live in Hollywood because she feels fat compared to the "perfect people" resident there.

"I love LA, but I couldn't live there," Knightley told the Teen Hollywood website. "If you're walking around LA, you're seeing all these perfect people and you start to think 'I've got to be like that'. You have to be really strong to live there - to resist the fad diet and not get the biggest breast implants."

She added: "There are a lot of pressures to conform to type - to be thin, blonde and busty. I'm skinny, but even I couldn't fit into some of the clothes there. There are some ridiculously skinny people in LA."