Kris Jenner is like a ''second mother'' to Blac Chyna.

The 61-year-old momager has proved an invaluable source of support and advice to her son Rob Kardashian's fiancee, and the 28-year-old beauty knows she can always turn to her when she needs help.

Speaking in a clip obtained by E! Online from her and Rob's upcoming special episode of their reality show, Chyna said: ''Everybody always talks about mother-in-laws and how they can be.

''But Kris is totally different, you know always willing to give me personal, good advice.

''With everything from like health insurance to talking to her about Rob and future plans and everything in between.

''Kris is like a second mother to me.''

During the clip which was filmed during her pregnancy, Chyna had a 4D scan of her baby daughter, Dream - who was born in November - and excitedly called Kris to share the images on FaceTime.

Kris exclaimed: ''She's so cute!''

It was recently confirmed 'Rob & Chyna' has been renewed for a second eight-episode series in 2017.

Jeff Olde, executive vice-president of programming and development at E!, said: ''Rob and Chyna's romance struck such a chord with our viewers, who were engaged in their story even before we started filming the first season.

''We are excited to share the next chapter of their story.''

The first season of 'Rob & Chyna' was a major success on cable TV in the US, with the show charting the couple as they prepared for the birth of their first child and lifted the lid on their much-discussed relationship.

Rob and Chyna - who also has four-year-old son King Cairo with ex-partner Tyga - are currently living in a lavish mansion owned by Kylie Jenner, Rob's half-sister, in order to be closer to his family.