Dwayne "The Rock" Johnson's dining room table just got a little more crowded this holiday season ... as his daughter, Simone (AKA Ava), just went official with her girlfriend -- NXT wrestler Tatyanna Dumas!
The couple shared a heartwarming Instagram Reel on their respective accounts on Sunday ... featuring a bunch of PDA and joint adventures they've had together.
While it's unclear when the two first became an item .