Rob Kardashian and Blac Chyna Are Expecting a Baby Girl!

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Looks like there's going to be another girl joining the female-heavy Kardashian crew!

Rob Kardashian and his fiancée, Blac Chyna, are expecting a baby girl. The pair announced the happy news on their reality show, Rob & Chyna, on Thursday, and Rob's famous family was quick to chime in with their thrilled reactions.

"IT'S A GIRL!" Kris Jenner tweeted. "So happy for Rob and Chyna! Can't wait to welcome this new little love bug to the world. #RobandChyna."

WATCH: Pregnant Blac Chyna Poses Nude on the Cover of 'Paper' Magazine

"Rob and Chyna are having a baby girl," a Kardashian source confirmed to ET last week. "They're very excited!"

While Rob had been vocal in the past about his desire for a baby boy, he told the Rob & Chyna cameras he's going to be "super happy with a girl."

"It's an emotional moment. Me wanting to have a boy, it definitely stems from my dad but I'm sure I'll have the same relationship that I had with my father with my daughter," Rob said. "I'm just happy that the baby's healthy."

The two have yet to publicly reveal whether or not they've come up with a moniker for their first child together, but Rob and Chyna confessed the newest Kardashian kid won't be getting a "K" name during a sit-down Facebook live interview last month.

"You already have King, that's a funny coincidence," Rob, 29, stated, noting that Chyna's 3-year-old son, King Cairo (who she shares with rapper Tyga), already bares the "K" initial. "But probably not."

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"You guys have to stay tuned for that too," Chyna added. "I'm not trying to give up no more details about the baby!"

The 28-year-old model confirmed that decision a few weeks later, telling Paper magazine, "The baby won't have a K name. We both agreed."

Baby news aside, the duo -- who got engaged in April -- is also set to say "I do," but are in no rush to walk down the aisle.

"Chyna and Rob are in a really great place," the Kardashian source told ET. "They will get married, but they don't have any plans set yet."

If it were up to Rob, however, "we would [get married] tomorrow," Chyna also explained in the Facebook live interview. "We would have been at the courthouse, downtown, a long, long time ago."

WATCH: Blac Chyna and Rob Kardashian Talk Wedding, Pregnancy and Potential Babysitters

"He wants to go there, but I'm like, 'We need to do it the traditional way,'" she continued. "'Cause I wanna turn up after! I wanna turn up on my honeymoon."

Hear more updates from Rob and Chyna in the video below.

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