Naomi Osaka and Cordae just revealed ... they're having a GIRL!!!
The "Gifted" rapper and the tennis superstar announced the major news on Friday ... sharing a pic of Cordae kissing Naomi's baby bump at their pink-themed baby shower.
The couple had an awesome celebration with their friends and family ... with Osaka and her growing belly standing in front of pink flowers, balloons, and a sign that read, "A little princess is on the way."
Osaka's fans were incredibly happy for the new parents .