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Kim, Khloe, Kourtney Kardashian Shocked By Rob’s Engagement — 'How Does Our Own Brother Not Tell Us?'

They found out through social media.

Rob Kardashian’s quickie engagement to Blac Chyna rattled the Kardashian family to their core! In a new clip for June 19 episode, Kim Kardashian confesses that she was taken aback by the stunning news.

The mother-of-two admits, “We wake up to all of these pictures of my brother getting engaged. How does our own brother not tell us?”

Khloe and Kourtney Kardashian are just as shocked. “He proposed in front of her whole family?!” Khloe asks while scrolling through her phone.

Rob, 29, popped the question after only three months of dating. And to top it off, the entire Kardashian crew was out of town skiing in Vail, Colorado when it went down! They remained silent on social media while the Internet went into a frenzy.

Keeping Up With The Kardashians airs Sundays at 9pm ET on E!

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