Rob Kardashian and Blac Chyna on Keeping Baby’s Sex a Surprise for Now: ‘We Leave That Up to God’

08/31/2016 at 03:30 PM ET

Rob Kardashian Blac Chyna Rollout - Main
Ari Michelson

Rob Kardashian finally speaks! In a wide-ranging interview in the new issue of PEOPLE, on newsstands Friday, the reclusive reality star and his expectant fiancée, Blac Chyna, open up about their impending arrival, repairing relations with his famous sisters and dealing with his 100-lb. weight gain. Subscribe now for the exclusive interview, only in PEOPLE!

Rob Kardashian and Blac Chyna are getting ready to welcome their first child. But even though they know they aren’t going to use a “K” name for their baby, there’s one thing they are keeping a mystery (for now): the sex.

“We leave that up to God,” Kardashian, 29, tells PEOPLE. “We’re going to wait to find out when the baby comes out.”

“Rob is going to cry for sure,” adds Chyna, who will star with her fiancé in their E! reality series Rob & Chyna, premiering Sept. 11.

“I’m going to be very happy,” adds Kardashian. “If there are tears, they’re going to be tears of joy.”

Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Babies newsletter.

The decision to expand their family is something the couple has been talking about for a while.

“We definitely discussed having kids,” says Chyna. “Rob made it very clear that he wanted to have a baby. Babies, actually! He wants me to have, like, four.”

“If I had found somebody at 19, I would have wanted the same thing then. But I never found anybody,” Kardashian adds. “Part of life is to build a family and have kids. And I thank God that we’re able to. It’s very exciting to me to be a first-time dad.”

RELATED VIDEO: Rob Kardashian and Blac Chyna Can’t Wait for You to See ‘The  Real Us’

Chyna recently posed for a stunning black-and-white nude maternity shoot for Elle. And despite the couple’s comments to PEOPLE about keeping their baby’s sex under wraps, the 28-year-old model told Elle they would be revealing the baby’s sex a little sooner.

“You all will find out [the sex of the baby] during the premiere of our show on September 11,” she said.

Rob Kardashian Blac Chyna Rollout - Cover
Ari Michelson

When asked what he thinks his late father Robert Kardashian would tell him today, Kardashian notes his dad would be “happy, looking down” — and that the Keeping Up with the Kardashians star himself is excited to pass the type of relationship he had with his own father down to his child.

“I had a really close bond with my dad. I was only with him for 15 years,” he tells PEOPLE. “That’s why I’m looking forward to having that long-term bond with my child and being funny and goofy like my dad was.”

For more from Rob Kardashian on overcoming his painful past and looking ahead to his bright future with Blac Chyna, pick up this week’s issue of PEOPLE, on newsstands Friday.

Aili Nahas and Jen Juneau

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Showing 14 comments

Change It Back on

Rob should REALLY get a paternity test.

doug on

“We leave that up to God,” What a silly comment…If there were a God we would never have heard of these two.

Anonymous on

I just threw up in my mouth

Gross on

I just threw up in my mouth

Anom on

Since Rob is with Chyna he is less isolated and depressed. She motivated him to have a brighter view on life.
He looks much happier then ever and are going to have a beautiful baby and thats all that matters.

Jo on

So they want to wait until the baby is born to find out the sex.. but the sex will be announced on the first episode of their show? Because no one will try to tell them or anything. Makes no sense.

Anonymous on

Well of course they have to “leave it up to God.” After all, he created us and chose our genders. Its never really changed, no matter how hard people try – your chromosomes are either XY or XX even if you change your genitalia.

S on

Well of course they have to “leave it up to God.” After all, he created us and chose our genders. Its never really changed, no matter how hard people try – your chromosomes are either XY or XX even if you change your genitalia.

Guess on

I say girl because she is carrying it up high and belly is very rounded. But she looks great so it may be a boy?

MrsNorth on

“We leave that up to God,” Kardashian, 29, tells PEOPLE. “We’re going to wait to find out when the baby comes out.”.. What does that mean??? Finding out the gender of your baby in no way takes away the work God had the decision of the ‘Gender’.. Discovering the sex prior to birth is just getting information early, not playing God…

charlotte on

“We leave that up to God!” Oh, please, you guys are disgusting.

Anonymous on

Does anyone notice that her clothes actually fit in this photo shoot and her hair is a believable color? And the cover pose looks unsurprisingly identical to one or two we have seen of Kim Kardashian and Kanye. I doubt it will last but for now it looks like she’s jumped on the Kar-Jenner bandwagon. Probably figured out that’s where the money is.

Belle on

Does anyone else notice that her clothes actually fit in this photo shoot and her hair and make-up are actually believable? And the cover pose looks identical to several Kim and Kanye pictures? She probably figured out that if trash is going to sell you have to at least wrap it up in expensive couture like the Kar-Jenner trash.

AuBrey Ward on

To Rob and Chyna….Psalms 23:5 I WILL PREPARE A TABLE BEFORE YOU IN THE PRESCENE OF YOUR ENEMIES. You are suppose to have haters it’s a law of the Universe that God swears by. God will repay all who come against you. Stay in Faith