NICOLE SCHERZINGER A$$ED OUT IN "CULO"

This is definitely one for the books.

Former Pussycat Doll and current "X Factor" judge Nicole Scherzinger let it all hang out for a new coffee table collaboration between Sean "Diddy" Combs, Interscope-Geffen-A&M Chairman Jimmy Iovine and fashion photographer Raphael Mazzucco.

In the sepia-toned photograph, the slim singer dons nothing but her birthday suit and a set of two leis around her neck - a nod to her hometown of Honolulu, Hawaii.

Henna tattoos run down the back of her legs, onto her behind and up her lower back.

But the soulful singer, 33, isn't the only one who doffed her designer duds for the book, which celebrates celebrity behinds.

Lady Gaga, Fergie and even Sarah McLachlan took the plunge and pose bottom-less in the 248-page "Culo By Mazzucco."

"Raphael is a true artist," Diddy said of the photographer in a press release. "He relies on instinct, capturing a raw, natural sense of beauty through his lens."

Not that the artist had to do much to play up his subjects' aesthetics.

Scherzinger spoke out about embracing her curves in the latest issue of Health.

"My new motto is: Stay active, eat everything in moderation and stop being so tough on myself," she said. "It's taken a long time to get here."

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