Why Kim and Khloé Kardashian Got Into a Major Fight at True's Birthday Party in 'KUWTK' Premiere

Khloé Kardashian just wanted to have the perfect birthday party for her daughter True, but we all know the famous family can't plan any event without a bit of drama going down.

The Season 17 premiere of Keeping Up With the Kardashians on Sept. 8 included its fair share of emotional moments, from Kourtney and Khloé butting heads over Kourt's 40th birthday, to Kim finding out she tested positive for Lupus antibodies. But the real craziness came at True's bash, which Tristan Thompson attended.

Khloé and Tristan had a dramatic split this past February, after it came out that the NBA star allegedly kissed Kylie's best friend, Jordyn Woods. This was hardly the first time Tristan cheated on KoKo, and so she cut things off for good.

The episode last night showed Khloé struggling with the decision to invite Tristan to True's birthday party, understanding that she shouldn't take away precious family memories from either Tristan or True. However, she knew seeing her ex, especially in front of a bunch of people, wouldn't be easy. Ultimately, Khlo decided he could come, but Kim made it known that she did not support her choice.

And of course when Tristan showed up, drama ensued. Apart from the Cleveland Cavaliers player confronting Kanye West about the choice of song for a KUWTK promo, Kim also got involved and created a very tense environment. Wanting it to be a fun-filled time for her daughter, Khloé blew up on Kim and broke down, storming off in anger.

The premiere ended there, leaving us wondering what will happen next between Khloé, Tristan, and Kim. The situation obviously was not preferable for any of them, but they're going to have to figure it out for True, and the whole family's sake.

KUWTK continues every Sunday on E!.