During the premiere of Rob & Chyna, Rob Kardashian and his fiancée Blac Chyna, offered fans an intimate glimpse into Chyna’s pregnancy, including the moment the couple found out the sex of their baby. “I’m pretty nervous. I’m excited,” Rob says before the big reveal. “I really want a boy.” Then the doctor announces, “You are having…a girl!” “Rob, it’s a girl!” Chyna exclaims excitedly. “Oh, that’s crazy,̶