Keira Knightley Fights Off Pirates ... and Anorexia Rumors

An awkward moment for Johnny Depp? Filming a kissing scene with his young (gorgeous!) co-star, Keira Knightly for Pirates of the Carribean: Dead Man's Chest.

But what makes Knightly uncomfortable? Every time someone asks about her weight. At the London's premiere of Pirates on Monday night, she responded to a question about her figure with: "Whatever people say about my weight they are all wrong."

The 21-year-old continued in an interview with People magazine:

"Hollywood is all about the way you look, and I don't think that's the healthy thing for anyone. But, if you're strong and comfortable with yourself, then you're going to be fine."

Part of the reason why questions about her health came up at the premiere? Knightley's slight figure was on display in a low-cut, backless bronze Gucci dress (pictured).

Nevertheless, she reiteratied that there's nothing to worry about.

"I've got a lot of experience with anorexia â€" my grandmother and great-grandmother suffered from it, and I had a lot of friends at school who suffered from it," Knightley said. "I know it's not something to be taken lightly and I don't."

Also spotted at the festivities were Depp - decked out in a fedora and sunglasses. He greeted fans and signed autographs for more than an hour.

Orlando Bloom, meanwhile, was also present and reports state he couldn't help himself, peeking down the front of Knightley's gown, which opened to her belly button.

"I haven't flashed anyone yet," she joked.