Kylie Jenner has some explaining to do!
In this first look clip from the episode, the sisters decide to call Kylie and confront her about her party.
"What a little bitch Kylie is," Khloe says. "I'm calling her now."
Khloe gets Kylie on the phone and says, "So I just heard you're throwing a huge birthday bash?"
Kylie tells her that she is and when Khloe asks if there's a reason she and Kourtney weren't invited Kylie tells her she hasn't told anybody yet.
"I'm not gonna tell anybody until I for sure know where I want it and everything," Kylie explains.