It's A Girl!: Kardashian Sister in Law Flaunts Baby Bump

Blac Chyna was spotted celebrating the premiere of her and Rob Kardashian's new show, Rob and Chyna, at Los Angeles' The Penthouse nightclub. According to IBTimes, the reality star and model had worn a nude jumpsuit and a sheer black dress, highlighting her baby bump.

Wow! @BLACCHYNA shows off her baby bump in tight sheer dress after #RobAndChyna premiere https://t.co/kdMGexAW7N pic.twitter.com/xRKGo8ZyhH

— OK! Magazine (@OK_Magazine) September 12, 2016

According to Inquisitr, Chyna and Rob had announced in May that they were expecting a baby. This announcement came one month after they got engaged. They had been dating for 3 months. Chyna and Rob have also revealed their child's gender: it's a girl!

Before the announcement, Rob said that he wanted to have a boy, saying that it stems from his relationship with his father, the late Robert Kardashian. However, he's confident he will also have a 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," he says. "I'm just happy that the baby's healthy."

People reports that both Rob and his family are excited, with Rob tweeting that he "can't wait to meet our baby girl," and sister Kim tweeting "A girl!!!!!!!!!! how cute is she going to be!!!!!!!"

While they both seem to be excited to become parents, things aren't all that happy. Rob says that he has doubts about his relationship with Chyna telling his mom, Kris Jenner, that he "just really don't know what's going to happen."

Chyna also appears to be questioning their relationship, telling one of her friends that she doesn't even know if she wants to stay with Rob. "Part of me wants to take a paternity test," she says.

Blac Chyna also has a son, King Cairo, with Tyga ... who also happens to be Kylie Kardashian's current beau. She is also close friends with Amber Rose, Kanye West's ex girlfriend. If anything, this should make family gatherings interesting.

The next episode of Rob and Chyna will air on September 18, Sunday, on E! network.