It may be iconic, but the Burberry trenchcoat isn't exactly renowned for being a sexy item in a woman's wardrobe.

But in the advertisement for new perfume Burberry Body, Rosie Huntington-Whiteley achieves the impossible and gives the trenchcoat a racy makeover.

Recently named the World's Sexiest Woman in a magazine poll, the 24-year-old leaves little to the imagination in the risque ad, which was shot by acclaimed photographer Mario Testino.

Lying on the floor of a studio, the open trench shows off the Devonshire model's toned body as she smoulders at the camera.

While good genes obviously helped Rosie, she insists she has to work hard to maintain the flat stomach on show in the ad.

She said: 'Nobody lands on earth with a body like this.

'We all work very hard to maintain a healthy body. I have to do many thousands of sit-ups.'