AceShowbiz -

Kim Kardashian and Kylie Jenner are at war over the youngest' latest racy picture. The Kylie Lip Kit founder is selling a white tee featuring a photo of her showing her butt crack to the camera while pulling down her pants.

Kim is reportedly angry at Kylie after the NSFW picture of the tee was shared on her website, The Kylie Jenner Shop. The $35 T-shirt featuring the alleged copycat photo of Tyga's girlfriend was sold out in minutes.

"Kim flipped the f**k out on Kylie!" a "Keeping Up with the Kardashians" insider tells Radar Online, "There was already a ton of drama between the two of them because Kim thinks that Kylie is obsessed with her and that she is trying to be her, which she is."

To make matters worse, the insider claims that Kris Jenner may be positioning her own daughters against each other. "Kris is focusing all of her attention on Kylie right now and Kim cannot stand it. That is why she always creates so much drama any time something like this happens," explains the insider.

A representative for the Kardashian family hasn't responded to a request for comment.