Khloe Kardashian Slaps Kourtney’s Boyfriend

Baby drama!

In this sneak peek of the fourth season premiere of Keeping Up With the Kardashians (airing Sunday on E!), Khloe Kardashian angrily confronts Scott Disick, the father of Kourtney Kardashian's baby (due this month).

Revisit reality TV's biggest catfights.

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Khloe accuses Scott of intentionally getting her sister pregnant so she wouldn't leave him. (Kourtney and Scott reportedly broke up in January after she accused him of cheating but got back together after she learned she was expecting.)

Watch as Scott and Kourtney tell what kind of parents they'll be in an exclusive video interview.

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"You thought she was going to leave you, so that's why you knocked her up," Khloe screams at Scott.

Check out all the photos from Khloe's quickie wedding to Lamar Odom!

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She later adds, "You wanted to just keep her for 18 years and not let anyone else have her."

Check out a racy photo of Kourtney, Khloe and Kim touting the show's new season!

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Scott shoots back: "18 years? I want her for eternity."

Khloe then smacks Scott across the face.

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