Rob Kardashian and Blac Chyna are engaged! The couple announced their engagement on their respective instagram pages, posting photos and videos of the giant rung Kardashian gave to Chyna. Sources told TMZ that Kardashian purposefully did not tell his family about his plans to purpose. Additionally, he popped the question right after some of his family went on a skiing trip to Vail. None of the Kardashian or Jenner sisters have taken to social media to congratulate their brother on his engagement.