Rob Kardashian and Blac Chyna's baby's gender has been revealed by an insider. It was said that there will be a new princess in the Kardashian-Jenner clan.

HollywoodLife.com reported that Rob Kardashian and Blac Chyna's baby will be a girl. The "Keeping Up with the Kardashians" stars will need to make room for another little lady in the brood.

"Rob's ecstatic," a source told Star magazine. "Of course, he would have loved a boy, but he's grown up surrounded by women. And Blac Chyna has always dreamed of having a daughter. They're having so much fun putting together the girliest of nurseries."

The 29-year-old sock designer definitely has had experience in dealing with women as he grew up with six of them. Rob Kardashian and Blac Chyna's baby, if it is truly a girl, will be the cousin of North West, Kim Kardashian and Kanye West's daughter, as well as Penelope Disick, Kourtney Kardashian and Scott Disick daughter.

Blac Chyna gushed about her fiancé, saying that she will no doubt be a great dad. "He's a genuinely loving person," she told Daily Mail. "Rob has all the qualities of a good father. He'll be straight."

It was previously reported that Rob Kardashian and Blac Chyna's baby details will only be revealed on their reality TV show, "Rob & Chyna."

Meanwhile, the Kardashians may have known about Rob Kardashian and Blac Chyna's pregnancy even before the couple got engaged. According to Jezebel, Tyga talked about his ex-girlfriend being pregnant and giving birth to a son in a recent episode of "Keeping Up with the Kardashians."

This is big news considering that if Rob Kardashian and Blac Chyna's baby is, indeed, a boy, he would be the only one to have the Kardashian family name. Tyga's comment seemed off-kilter, though, since the "KUWTK" episode was filmed a month before the couple announced their engagement.

This led to speculations that the Kardashian-Jenner clan may have known that Blac Chyna was pregnant even before she and Rob announced their wedding plans.