Keira Knightley has defended her weight after being photographed at the London premiere of Pirates Of The Caribbean: DEAD MAN'S CHEST looking skinny. The actress is furious about claims she's too thin - after she was snapped wearing a loose dress that exposed her slight frame - insisting she is healthy and critics have got it all wrong. She says, "Whatever people say about my weight they are all wrong. There is pressure to be thin in Hollywood because it's all about the way you look. "But I'm not going to apologise for the way I look. If you're strong and comfortable with yourself then you're going to be fine."