• Reality TV star Kim Kardashian's brother Rob Kardashian poses with model Blac Chyna.

Reality TV star Kim Kardashian's brother Rob Kardashian poses with model Blac Chyna. (Photo : GettyImages/GabeGinsberg)

Blac Chyna and Rob Kardashian are having a baby girl. The big revelation has been made during the Sunday premiere episode of "Rob & Chyna," wherein the pregnant E! star was filmed during one of her doctor visits.

"I'm pretty nervous - I'm excited," said Kardashian during the show before the big reveal. "I really want a boy."

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However, the doctor soon announced that the couple will be having a girl. At first, the 29-year-old reality TV star seemed a bit taken aback that his future child would not be a boy, but he soon got emotional at the thought of having a little girl.

The news did not stay a secret for long since the brother of Kim Kardashian soon spilled the beans to his mother Kris Jenner. It turned out that Chyna was not very happy about it since the couple had earlier decided to keep child's gender a secret so they could stage a fun family reveal.

Meanwhile, the expectant mother has declared that "Rob & Chyna" will not focus on her past. While some details of her life before she came into the spotlight are not very well known, the model admittedly hopes that the new reality series will allow fans and viewers to get a better glimpse of her personality and true character.

"I kind of give a brief description of what I've been through, but it's not anything too deep," Chyna told Essence during an interview. "With the show, I didn't want to focus so much on my past."

Rob and Chyna met at Kendall Jenner's 16th birthday party. The two started texting each other as soon the model broke up with Tyga. When the couple went public with their relationship in January, the fans of the Kardashian family gasped in unison since the model shares a son with Rob's half-sister Kylie Jenner's on-again, off-again boyfriend Tyga. 

"We've all talked, I've met up with Kylie," Chyna, 28, told People. "Everybody is mature."

Watch the video below to catch the glimpse of "Rob & Chyna" premiere episode: