Kourtney Kardashian recently shared a nude photo of herself amid speculations she and Justin Bieber are hooking up. The "Keeping Up With The Kardashians" star took to social media to give her followers a full look at her naked backside.

Kardashian shared the black-and-white snap on her Instagram page along with a full moon emoji. The photo shows the 36-year-old mother-of-three flaunted her naked butt, as she poses with her back to the camera.

Kardashian also revealed a hint of side-boob, as she places her right arm over her chest. She also seductively places her left hand on her thigh and crosses one leg over the other.

Kardashian's naked photo was taken from her nude shots for Vanity Fair's "Metallic Life" photo series, which was published in September. A behind-the-scenes look at her photo shoot with photographer Brian Bowen Smith was revealed in a teaser for Season 11 of "Keeping Up With The Kardashians," as seen in the video below.

The reality TV star also shared a similar photo on her Instagram a couple months back. The photo showed Kardashian lying on her side on the floor and with her back to the camera. She had captioned her nude picture, "Love being a part of @brianbowensmith #metalliclife series. Go to vanityfair.com for more images and to read about it. @vanityfair @deregallery."

Kardashian shared her naked photo amid speculations she and Bieber have been seeing each other for the past four months following her split from Scott Disick in July. The recent cover of US Weekly suggests she and the 21-year old singer have been secretly "hooking up since late August or early September." Another source added that the pop star had also bragged about his romance with the eldest of the Kardashian sisters to his friends.

Despite the speculations, Kardashian's ex-boyfriend Disick has not said anything against the pair. It's believed the 32-year-old has refrained from saying anything bad about Bieber and Kardashian's supposed romance because he feels humiliated. He reportedly also thinks of it as Kardashian's revenge on him for what he's done to hurt her in the past.

However, Bieber and Kardashian's little fling is "not serious," a source told People. Even though Bieber finds her hot and that their "cuddly and huggy" when they're together, a source said Kardashian is just having fun.

"It's just one of those things where it makes Kourtney feel good about herself," the source said.