"""Blac Chyna wasn't the only one surprised when Rob Kardashian popped the question. \n\nIn a new preview for Sunday's episode of Keeping Up with the Kardashians, Kim Kardashian, 35, reveals that Rob neglected to let his family know about his engagement plans. \n\nIt turns out the Kardashians found out about Rob's engagement at the same time as everyone else through social media. \n\n""""We wake up to all of these pictures of my brother getting engaged,"""" Kim says in an interview, asking, """"How does our own brother not tell us?""""\n\nIt's no secret that the Kardashians were initially not thrilled about Rob's relationship with Blac Chyna, and they noticeably kept quiet after news of the engagement broke."""
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