Rob and Chyna

Socialite and reality TV star Robert Kardashian is unhappy that his fiancée Blac Chyna is having a girl.

On Sunday’s series premiere of E!’s Rob & Chyna, Kardashian smiled as the doctor revealed the sex of Chyna’s fetus. But his smile quickly turned into a frown.

The 29-year-old couldn’t hide his disappointment. “I really wanted a boy,” said Rob who was raised in a home with 5 sisters.

“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.”

In Vitro fertilization is all the rage in Hollywood nowadays. Most Hollywood couples take that route to have options for their designer babies. But the procedure is very costly.

At the bare minimum, IVF costs around $24,000. Couples can end up spending $100,000 or more to choose the sex of their baby.

Chyna, 28, already has a 3-year-old son, King Cairo with washed up rapper Tyga.

The reality show premiered to low ratings and controversy on Sunday. An insider revealed that the scenes between the 2 friends are scripted — as if we didn’t know that already.