Kim Kardashian Is Sleeping Booty: 'KUWTK' Star Posts Racy Bikini Selfie on Instagram

Kim Kardashian is famous for her Instagram selfies, especially the photos that feature her sleeping in a bikini that barely covers her famous booty. Of course, they aren't really selfies when someone else takes the picture, unless Kim uses a self-timer and carries a tripod wherever she goes.

On August 18, the Keeping Up With the Kardashians star posted a photo of herself sleeping in the sun with her rear end facing the camera. Kim captioned the Instagram photo "Let me sleep." Was she really sleeping or just striking a pose for her 17.5 million Instagram fans?According to E! Online, the photo of Kim sunning her buns was taken in Mexico. Kim and Kanye are once again staying at Joe Francis' house in Punta Mita. This is the second time the newlyweds have traveled to Mexico this summer.

Last month, they brought along their daughter North for a family vacation, but this time Kanye is there to work. West is reportedly working with his production team in Puerto Vallarta to record new music for an upcoming album while Kim sleeps in the sun and posts photos on Instagram.

If you can't get enough of Kim Kardashian's selfies, you're in luck. Kim is publishing a new book, titled Selfish, that will be chock full of selfies of her face, her famous backside, and various other photos of her curvy figure. Vibe states that the 352-page book, published by Rizzoli New York, is set to hit the shelves in April 2015. There is no doubt that it will include plenty of photos of Kim sleeping in a bikini.Kim revealed her plans to create a book of selfies on a recent episode of Keeping Up With the Kardashians on E! During the family's vacation in Thailand, Kardashian was shown putting together a collection of her best selfies for the upcoming book. In an interview with the Los Angeles Times, she stated that the "sexy" book was initially created to become a Valentine's Day gift for her hubby Kanye West, but for $19.95 you can get one for yourself in April.

[Images: Kim Kardashian Instagram]