Rob Kardashian and Blac Chyna reveal the gender of their baby on 'Rob & Chyna' premiere

Rob Kardashian and Blac Chyna are having a girl!

During the premiere of their E! original series, "Rob & Chyna," on Sunday night, the controversial couple announced that they are indeed expecting a girl, despite announcing just a couple of days before that they didn't want to find out the sex of their baby until it was born.

SEE ALSO: Kourtney Kardashian continues to stun in hot swimwear

Chyna had teased the announcement on Instagram ahead of the big premiere, writing on Instagram, "Find out what @robkardashian and I are having tonight at 9pm on E!!"

After the big reveal on the show itself, Chyna took to Instagram again to share the news with the masses who may not have tuned into her new show.

"It's a girl," she captioned a funny gif that contained her and Kardashian's faces.

Recently, Chyna and Kardashian commented on whether or not they were planning on keeping up the "K" name tradition that has become a signature of his family (Kris, Kourtney, Kim, Khloe, Kendall, Kylie...)

"I'm not tryna give up no more details about the baby," Chyna said with a smile.

See photos of Rob Kardashian and Blac Chyna together:

"...but probably not!" Kardashian chimed in as yet another dig at his family.

We'll find out the name when Chyna gives birth later this fall.

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