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Kim Kardashian, Paper Magazine, Nude Cover

Paper Magazine, Twitter

We have all the exclusive behind-the-scenes details on Kim Kardashian's naked cover photo shoot for Paper magazine!

Believe it or not, the super-sexy, Internet-breaking booty pic wasn't planned. Instead, it was an impromptu decision made by both Kim and photographer Jean-Paul Goude.

"Kim went into the shoot with just the one cover image in mind: the champagne pic, because Jean-Paul Goude wanted to recreate his pic he took 30 years ago. That was it," a source tells E! News exclusively of the shoot, which took place back in September during Paris Fashion Week Spring 2015. "But Jean-Paul and Kim hit it off and they asked everyone to leave and they both got creative. No publicist, no magazine execs."

Kim Kardashian, Paper Magazine

Jean-Paul Goude/Paper Magazine

"He had to be inspired and sketch her first and have a vision," the insider adds. "So he came up with that—ripping the dress off. Kim loved it!"

Kanye West's other half was completely comfortable during the racy NSFW nude photo shoot. "Kim was all game for anything and the art of it," the source said. "He's iconic."

As for how Kim got her glistening glow for the naked Paper cover, the source dished, "The shine was from this special oil that sprays on, and Kim's make up artist Mario Dedivanovic rubbed it on her. She's worked with him for seven years."

And it sounds like North West's mama isn't worried about haters who've had some not-so-nice things to say about her booty-ful Paper cover (paging Naya Rivera!). "Kim will continue to do sexy shoots as long as she's in shape," the insider told us, adding, "Kanye loves it."