Kim Kardashian Calls Sister Kourtney ‘Crazy’ in New Season of ‘Kim and Kourtney Take Miami’ (VIDEO)

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Kim Kardashian is worried about her older sister Kourtney – and this time, it has nothing to do with Scott Disick.

The E! reality star recently told Celebuzz the busy mom of two is acting “crazy” in Miami, where the two sisters are currently filming the upcoming season of Kim and Kourtney Take Miami.

“The vibe with the two kids is completely different than it was just with Mason,” Kardashian told Celebuzz at the Midori Halloween party in New York City.

“Kourtney is a different person. I can’t really relate to her — and I’m trying so hard — but she’s crazy.”

“I don’t know if it’s Miami or the change of environment, but she’s just not herself,” Kardashian, 32, added. “And it’s troubling me.”

As for the new season of the hit E! reality show, don’t think bringing Kourtney’s two children — Mason, 2, and Penelope, 3 months — along for the ride has put an end to the drama.

“It’s going to be a wild season,” teased Kardashian. “Miami is just a whole different vibe.”

However, despite all of the craziness, the reality star enjoys spending time with her nephew, who affectionately calls her Aunt Kiki.

“Aunt Kiki is in full effect,” Kardashian gushed. “I love waking up with Mason every single day. It’s changed me. There’s no way to describe it, just waking up with my nephew, who I’m so in love with… I fall in love every single day that I wake up.”

Kim and Kourtney Take Miami premieres January 2013. 

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