Rob Kardashian and Blac Chyna's engagement is just the latest in a strange and convoluted chain of events and entanglements between the Kardashian klan, Blac Chyna, Tyga, Kanye and Amber Rose. Don't believe us? Just wait...

This morning, you may have heard that Rob Kardashian and model/entrepreneur/hip-hop-booty-girl for-hire Blac Chyna got engaged, resulting in a storm of silence from his über-famous sisters, Kim, Kylie, Khloe, Kourtney and Kendall. As telling as the absence of congratulatory Instagrams and tweets from the family may be, what's even more intriguing is the twisted history of Rob and Chyna's social network. Like a real-life web of only-in-LA weirdness, just a quick dig into the ex-relationships and friendship circle of this California posse reveals exactly how sordid and, if we're being honest, totally incestuous it is.

Click through the gallery above for a pictorial history of how far these two blended 'families' go back.  

The fascinating, complex history of the Kardashians, Blac Chyna and Tyga