Kourtney Kardashian 'Feeling Betrayed' By Sisters Kim & Khloe Kardashian — Find Out Why

Kourtney Kardashian has been enjoying a lot of quality family time lately, but not with her sisters Kim and Khloe. According to a source close to the oldest Kardashian sister, "She has been purposely distancing herself from them because she feels slightly betrayed."

"Kourtney and Kim have had it out many times over the years because Kourtney cannot stand how fake she is and says that she could 'look like that too if she went to every cosmetic surgeon in Los Angeles,'" a source close to the Kourtney & Khloe Take The Hamptons reality star tells RadarOnline.com exclusively.

But it is not only Kim that Kourtney, 35, is on the outs with. Says the insider, "With Khloe, Kourtney and she were super tight in the past, but she cannot even deal with her anymore because she has become a completely different person. Khloe's humility is gone."

As RadarOnline.com previously reported, the longtime girlfriend of Scott Disick and mother to Mason, 5, Penelope, 2 and newborn son, Reign, recently skipped a to New York City because she reportedly did not want to "deal with the drama."

"In a sense, Khloe has become Kim which is why the two of them are bestie-sisters now," the source claims.

"But Kourtney is okay with is because she has been focusing a lot of her energy on getting in shape after the baby and on her relationship with Scott," the source tells RadarOnline.com.

"They have been in a holding pattern for last couple of years because of his alcoholism. Now that he is consciously choosing differently, it has changed everything for the two of them."