Blac Chyna has started filming scenes for 'Keeping Up With The Kardashians'.

According to Us Weekly, the pregnant model filmed with the family at Khloe Kardashian's birthday party last week.

And in an upcoming episode, Rob's mother Kris Jenner can be seen saying she has accepted their romance.

She says: "Just being with them, and hearing what they had to say, and seeing how in love they are, is amazing."

Meanwhile, the couple - who got engaged in April after a whirlwind romance - recently signed a deal with E! for six 60-minute episodes of their own docu-series 'Rob & Chyna'.

According to a statement from E!: "The couple will openly share their new life while setting up their new home and preparing for their first child together."

A special episode, celebrating the birth of their baby, will follow.

Jeff Olde, E!'s ex ecutive Vice President of Original Programming & Development said: "Very few love stories have created as much pop culture buzz as Rob and Chyna's, and we are thrilled to see Rob in such a happy place. We are excited to share the next chapter in their relationship."

Ryan Seacrest Productions and Bunim/Murray Productions are making the show for E! with Ryan, Gil Goldschein, Jeff Jenkins, Farnaz Farjam and Ailee O'Neill as ex ecutive producers along with Rob, Chyna and Rob's mother Kris Jenner.

Rob, 29 and 28-year-old Chyna - who has a three-year-old son King Cairo with her former fiancé Tyga - caused controversy when they first started dating as she had been feuding with Rob's sister Kylie Jenner for some time.

Chyna was furious when Tyga, 26, started dating Kylie, 18, soon after their split but she and the Kardashian/Jenner family appear to have put their differences behind them.