Now it seems the feud really isn't just for ratings, with an insider telling Radar Online that once the camera's stop rolling, the two sisters can't be in the same room together.
"They can't be in the same room together.
“Kourtney has hated Kim for a couple of years now. She thinks she’s vapid and mean."
The source continued: “Their egos have clashed big time and when the cameras aren’t on, they don’t speak. There are hints of their feud, of course, but the reality is they genuinely can’t stand each other.”
The source also claims that in true Kourtney style, the mum-of-three "has much better things to do with her time than kiss up to Kim."
The source adds that as far as the KKW Beauty founder is concerned: "Kim thinks Kourt should kiss up to her given she would be a nobody without her."
While this is all just rumours, the fight descended into a pretty bad place last week when Kim called Kourtney a fake humanitarian.
“You’re going to school to become a lawyer and help the world and these are the kinds of problems you have?” Kourtney said before reading Kim’s response. “Then she’s like ‘You’re really a miserable human being and you keep not understanding the issue because you all of the sudden turn into such a humanitarian and talk about the world’s issues which you’ve not contributed one ounce to the world.'”
Then Kim hit decidedly below the belt.
“I actually do s**t for the world and you f**king fake it all day long and act like, ‘Oh! There’s people dying, Kim.’ And what the f**k are you doing about it? So, shut the f**k up.”
We really hope Kris Jenner has a big grand plan that we just aren't seeing yet because we want our sisters back together!