See George Clooney's Girlfriend...Naked!

A photograph of Keibler from behind is seen under resin and gold-hued strokes of paint. While the profile of her face may not be instantly recognizable, it's definitely her.

She posted a G-rated pic of the image on WhoSay. "So excited for the release of CULO!!!" she wrote. "Raphael Mazzucco rocks! One of my fav photographers. Here's a sneak peek!"

Keibler, who has reportedly declined offers to pose for Playboy on more than one occasin, was shot by Mazzucco in June in Beverly Hills.

Edited by Sean "Diddy" Combs and Interscope and A&M Chairman Jimmy Iovine, some of the book's artwork was first seen last month during an episode of Entourage when Vince (Adrian Grenier) was being shot by Mazzucco.

The book's Nov. 22 release will be followed by a traveling gallery exhibition in the U.S. and overseas.

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