Is Kourtney Jealous Of Kim?

Tension mounts between the Kardashians sisters in an all-new "Keeping Up With the Kardashians" promo.

Uh-oh.

Kourtney Kardashian seems to be seeing red after her normally-blaze beau, Scott Disick, rolls up his sleeve to lend a hand to Kim Kardashian in building her new nursery.

"I love how you don't do this at our house," mom-of-two Kourt sarcastically says in a new promo their E! reality show, Keeping Up With the Kardashians.

When matriarch Kris Jenner steps in to quell the argument, Kourtney snaps and tells her mother to "stay out of it."

Yikes! Is there a sibling rivalry brewing up?

Catch an all-new episode of Keeping Up With the Kardashians at 9PM on E! to find out.

 

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