KIM Kardashian was forced to clean up nasty cuts made by her sister Kourtney after the pair got into a cruel fistfight on camera.
The scenes will air on Keeping Up With The Kardashians on Thursday on E! but a teaser clip reveals the lead up to the fight as months of tension finally boiled over.
"Do you think I want to come into this negative environment every f****g day?” says Kourtney.
"When I don’t see you at filming, you’re completely fine when we’re not in this environment.”
As younger sister Khloe attempts to resolve the fight and half-sister Kendall Jenner watches on in disbelief, Kim interrupts Kourtney to tell her to "go" before she retorts: “I don’t want to be near your fat a**.”
“I don’t understand why there’s all this judgment about the way we each want to live our lives. We should be accepted for what we each want to do," said Kourtney later in her VT.
She added: "It’s not a positive environment for me to want to be in every day when I feel like they’re so critical of me.
"Every day I’m coming in I’m like, ‘Why am I choosing to be in this environment?’ and I think I just reached my point of not being able to tolerate it anymore."
Fans have already seen ; it occurred after Kim criticized the Poosh creator’s work ethic and accused her of “not caring about stuff".
Visibly offended, Kourtney then fired off: “I will literally f**k you up if you mention it again. Shut the f**k up and don’t laugh like that, you look like a freak!”
The mother-of-three continued her angry rant: “If I didn’t want to work my a** off and I wanted to be a stay at home mom, that’s f*****g fine you f*****g literal a**hole.”
The two began swinging at each other before Khloe split them up, but after Kim noticed a battle wound on her arm, she chased after Kourtney and began to hit again.
“Don’t ever dig your f*****g nails in me like that! How old are you? How f*****g old are you?” the beauty mogul yelled in tears.
Kim then delivered the slap heard around the world and gave Kourtney back-to-back hits to her face.
Kourtney tried to run away but the KKW founder once again followed and ended with one last hard swing on her face
Kim, who is married to Kanye West, previously revealed that the fight shut down filming on their reality show, admitting she had never wanted to "resort to violence".
“But she scratched me so hard. You couldn’t see but I was bleeding. I felt it on my back. I went over and slapped her back," she said.
“It’s not my proudest moment but we were going through it.”
Speaking to US talk show host Jimmy Kimmel, she continued: “Everyone was really shook for a minute and just was like, ‘This isn’t our type of show’. We want everyone to be comfortable and safe."
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