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Keira Knightley steamed up the lens with her new curvy, nearly bare-all pics for cosmetic giant Chanel.

The 22-year-old, who had a carefully-placed bowler hat in the pic, gave a glimpse of her twin assets.

Earlier, the actress was seen in King Arthur American posters as a buxom beauty, but she told a US magazine that the promotion poster was not original.

"Those things certainly weren't mine. We had an interesting discussion when they said, ‘we want to make them slightly larger and you'll get approval’ and I was like, 'OK, fine. I honestly don't give a s***'" Daily Mail quoted Knightley, as saying.

The new femme fatale Knightley, who has been known for her tomboyish look since she appeared in ‘Bend it like Beckham’, once spoke about her dislike of her chest.

"I don't have any t***, so I can't show cleavage,” she said.

The ‘Pirates of the Caribbean’ beauty insisted that Chanel’s Coco Mademoiselle was the first ever ‘women’ perfume she wore.

“It is the first women’s perfume I’ve ever worn. I need something clean,”

Knightley is thought to have signed a one-year contract worth more than 500,000 pounds to be the face of the scent.