Rob Kardashian and Blac Chyna‘s new E! docu-series, “Rob & Chyna” premiered on Sunday night with the couple revealing the gender of their unborn baby.

Before the big reveal, Rob confessed, “I’m pretty nervous. I’m excited. I really want a boy.”

Then, the doctor announced, “You are having…a girl!”

The look on Rob’s face said it all.

Watch the clip on page 2.