Blac Chyna Rocks Sexy Sheer Outfit, Shows Off Baby Bump At L.A. Nightclub Amid Rob Kardashian Relationship Troubles [PHOTOS]

Blac Chyna celebrated the debut of her new reality series, “Rob & Chyna,” in style by hitting Los Angeles’ The Penthouse nightclub in a sexy number.

On Sunday, Sept. 11, the 28-year-old model and reality star was spotted filming at the West Hollywood nightclub without her fiancé, Rob Kardashian. Chyna donned a nude jumpsuit and black sheer dress for the occasion, according to Entertainment Tonight. Check out photos from Chyna’s latest outing below!

Meanwhile, Chyna has been busy posting about her beau and her pregnancy on her Instagram account, as well as teasing fans about her baby’s sex. Prior to the premiere of their new E! reality show, she shared a photo of a cartoon boy and girl, telling fans that they’ll reveal their baby’s sex in “Rob & Chyna.”

On Sunday night’s premiere episode, Chyna and Kardashian found out that they’re having a girl. Prior to the announcement, the 29-year-old younger brother of Kim Kardashian revealed that he wanted a baby boy, admitting that his desire for a son comes from his relationship with his late father, Robert Kardashian. However, after finding out that he and Chyna will be welcoming another Kardashian princess, he said he’s confident he will also have the same loving relationship with his daughter.

"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. I'm just happy that the baby's healthy,” he explained.

But while he’s more or less confident about his future relationship with his child, Kardashian couldn’t say the same about his relationship with Chyna. He confessed that he has doubts about his future with his fiancée, telling mom Kris Jenner, “Honestly, with me and Chyna, I just really don't know what's gonna happen.”

In the new teaser trailer for “Rob & Chyna,” she also seems to be questioning her relationship with Kardashian as well. “I don’t even know if I want to stay with Rob. Part of me wants to take a paternity test,” she told one of her friends in the clip.

Find out what happens next to Chyna and Kardashian when the next episode of “Rob & Chyna” airs on Sunday, Sept. 18 on E! network.