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Rob Kardashian's engagement to Blac Chyna is causing even more drama this week!

In a sneak peek promo for this Sunday's brand-new episode of Keeping Up With the Kardashians, the fallout continues as the family tries to make sense of Rob's surprise proposal.

"Rob hasn't said anything to us," a confused Khloe Kardashian says.

Kris Jenner then asks the family, "Did you see what she wrote about how we weren't invited to the wedding?"

Yikes!

Watch the clip for yourself to see why Khloe says Rob "needs to be cut" from the family.