Rob Kardashian Posts Photo of 'Pretty Mama' Kris Jenner Amid Blac Chyna Drama

The momager will serve as a special co-host for the show's New York Fashion Week episode airing on Feb. 18, PEOPLE can reveal exclusively. She'll help wrap up Fashion Week coverage for E!, joining Melissa Rivers, Giuliana Rancic, Brad Goreski and 

Us also reported that the Kardashians and Jenners are having a hard time coming to terms with Rob's new romance. “They are shocked, confused and in disbelief,” a source close to the family told Us. “Kylie says Rob has stabbed her in the back." For more 

It's well known that before their respective divorces, the two couples — O.J. and Nicole Simpson, Robert and Kris –were good friends and went on trips together. Jenner and Nicole Simpson also stayed pals. As the mini-series shows, Jenner and Nicole 

Us also reported that the Kardashians and Jenners are having a hard time coming to terms with Rob's new romance. “They are shocked, confused and in disbelief,” a source close to the family told Us. “Kylie says Rob has stabbed her in the back." For more 

Although famous feuders Kim Kardashian and Amber Rose finally called a truce on Feb. 1, it seems like mama bear Kris Jenner was actually the one behind it ALL. HollyoodLife.com has the EXCLUSIVE scoop on what actually brought Amber and Kim