Nicollette Sheridan has posed naked for a charity campaign.

The 'Desperate Housewives' beauty appears in a poster for London Fog - whose proceeds benefit Paul Newman's Hole in the Wall Gang Camp - but the majority of her modesty is protected by long-term lover Michael Bolton.

The 'When a Man Loves a Woman' singer is pictured wrapping his overcoat around Nicollette, concealing everything except her butt.

The campaign was shot by Davis Factor and appears in the April issue of several fashion magazines.

Hole in the Wall provides children with cancer and other serious illnesses a camping experience, and offers support to their families and healthcare providers.

It was recently reported Nicollette and Michael had married in secret. The couple - who got engaged in March 2006 - were seen leaving a New York restaurant in December both wearing a band on their wedding fingers.

A source said: "If they have got married, they've kept it very quiet. Michael wasn't trying to hide his ring, though."

Michael and Nicollette originally dated in the 90s but split in 1993, before rekindling their romance in 2005. The couple announced their engagement after Michael popped the question and presented Nicollette with a huge diamond ring.

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