Keira Knightley sign new commercial ad: Hollywood actress Keira Knightley felt like she was playing a superwoman when she shot on a bike for an advertisement for fashion brand Chanel. The 25-year-old - the face of Chanel's Coco Mademoiselle fragrance - talks about her experience in a teaser of the ad to be released in full Monday, reports dailymail.

"Nobody said exactly what it was going to be like. I knew that it was something about a motorbike, and I knew that it was going to be beige. They said, 'Sort of catsuit', and I said, 'OK'. It was completely unexpected. It's a Chanel superwoman, I think," Knightley said in the voiceover of the teaser video. The "Pirates of the Carribbean" actress is shown in a beige catsuit standing next to a vintage motorbike, and she looks stylish and chic.

Knightley shot for the campaign in September 2010, when she was pictured zooming around the Place de la Concord in Paris. In the teaser video, the actress appears as though she tried hard to concentrate when she rode the bike, but it doesn't seem like she actually drove it around.

She was towed on a trailer as a camera captured close-ups of her face, and a stunt woman was also seen taking over from the actress. Knightley has been the celebrity face of the French fashion house since 2006.