Kourtney Kardashian was furious when she found out Kim Kardashian was having daughter North West's birthday party at her house after she specifically told her she couldn't. Someone accidentally sent Kourt the evite and she was understandably pretty upset that Kim went ahead with the party at her pad, anyway.
To make matters worse, when Kourt told boyfriend Scott Disick about it, he was mad too, he just couldn't fly to California to confront Kim with her because he was hosting a party at a nightclub, something she's repeatedly asked him not to do.
In this sneak peek from Kourtney and Khloe Take the Hamptons, Kourt arrives at her house for the big confrontation. Oddly enough, Kim can't understand why she's mad - meanwhile, a huge Ferris wheel is being installed on her lawn. Yeah, we'd be mad, too!
This episode airs tonight at 9pm ET/PT on E!