Blac Chyna plots to change name to Angela Kardashian after engagement to Rob Kardashian

He's already pointed out that his children will be the only genuine Kardashians of the next generation.

Now Rob's new fiancée has shared her own excitement about the chance to bear his famous last name - announcing plans to become a Kardashian upon marriage.

'She's soon to be Angela Kardashian. She's ecstatic,' a representative for the model told People magazine, referring to Blac Chyna's birth name of Angela White.

And that may have something to do with the revelation that Rob 'blindsided' the Kardashians with the news.

Indeed, sources tell TMZ that the 29-year-old 'went to great lengths' to ensure his proposal was a shock to his family, calling his actions 'aggressively' on the quiet.

And a source told People magazine: "No one [in his family] is jumping up and down with excitement today. They have made a united decision as a family to not comment on social media yet about Rob's engagement. The news is not shocking, and not totally unexpected.'

And the source added that while the relationship had been 'good' for Rob, his family felt it was too soon for marriage. 

'There has been a fear that Blac Chyna is manipulating the situation with Rob. That he is getting himself into a situation that is not ideal for him. Blac Chyna has been great as kind of a rebound. As someone that got Rob out of a dark place, that helped him get motivated and healthy again. Let's just be honest, no one is really hoping for a marriage to happen.'

Not that Rob and Chyna seem to be hanging on for any formal response from his siblings.

Instead, as Kourtney, Kim, Khloe, Kendall, Kylie and Kris go skiing with their children and assorted hangers on in Vail, Rob and Chyna are delighting in their good fortune.

Just after midnight on Tuesday, Blac Chyna shared a snap of the sparkler on Instagram, simply captioning the image with the word: 'YES!' in capital letters, before they headed to the Ace Of Diamonds strip club in Los Angeles.

The ring itself is a seven carat, round brilliant cut diamond in an eternity band setting from celebrity jeweller Ben Baller.

Ben posted a stunning video of the ring on his Instagram page, adding a personal message to the happy couple.

He wrote: 'Congrats to @RobKardashian & @BlacChyna on getting engaged. Rob, I have never seen you this happy before and I've known you since you were a teenager.

'I'm glad you came to your day 1 homie to get this massive [ring] for your lady. You know I don't play when it comes to diamonds. God bless #7Carats #VVS #IFANDCO #BlacChyna #RobKardashian.