Kim Kardashian and Kourtney have been hit with accusations of faking their scuffle in new trailer.
The 18th series of the reality show has teased some explosive action with Kim , 39, packing the punches on her sister Kourtney, 40, when an argument becomes out of hand.
Chaos descended on the Kardashian clan as the sisters were seen at war with each other in the latest trailer for the new season of Keeping Up With The Kardashians .
Yet sources disclosed to The Sun the conflict was deliberated exaggerated and stage managed to create drama for the show.
The insider claimed: "It really didn't escalate to anything other than a shove and Kim didn't land the punch. It's really exaggerated for TV. Made for TV drama.
"They really don't hate each other, and mom Kris [Jenner] would NEVER let there be actual violence.
"Sometimes they do fight because Kourtney is jealous Kim is more successful, and it's true Kim didn't believe Kourtney was pulling her weight on the show."
The Mirror Online have contacted Kim Kardashian's rep for further comment on the matter.
However, tensions had been rising between Kourtney and Kim in the previous season of Keeping UP With The Kardashians.
Kourtney has indicated she would be scaling back her screen time with the reality show.
It could be her sister Kim coming at her with fists flailing may have driven this desire to step back from the show.
While Kim and Kourtney have been known to vent their frustrations with each other, they had never got into a physical fight over the years.
The teaser clip showed Kim punching Kourt in the face as the row erupted between the two sisters in their lavish family setting.
The epic fight escalated after Kourtney was seen throwing something at Kim who looked to settle the matter with a couple sharp blows to the head.
Kim shouted: "You have nothing to say! Don't ever come at me like that!"
Tensions were high from the start of the clip as Kourtney was bickering with Kim and Khloe.
Kim asked Kourtney: "Why do you have to have an attitude?"
Kourtney replied: "Don't involve yourself in business that is not yours
To which Khloe retorted: "Then don't talk about it in front of me."
Will Kourtney and Kim make up? Find out on the new season.
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