Kelly is posing nude for the first time in Playboy's March issue. She will appear in a six-page pictorial shot by her ex-husband Gilles Bensimon.
"I have to warn you, I'm a little bit shy," Kelly said in a statement to Access Hollywood.
Despite her purported bashfulness, Kelly said she's posing in the men's magazine to prove that 40-something moms can be provocative too.
"I'm thrilled to be appearing in Playboy to show the world that a 41-year-old mother of two can be sexy!" she said. "It was a wonderful experience to work with Gilles – one of the world's most-talented fashion photographers – as I knew that he would make me look beautiful and sexy. I hope I made Hef proud!"
Kelly returns to the small screen in Bravo's third season of "The Real Housewives of New York City" on March 4.
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