Chris Brown & Tyga -- Playdate Fit for a King ... And Royalty (VIDEO)

Tyga is now hanging out with an even younger girl than Kylie Jenner -- but don't worry, it was just a playdate with Chris Brown's daughter, Royalty, and his son, King.

Chris and Tyga's adorable offspring hit it off during their daddy playdate at Chris' house. In the video Tyga posted ... he did something to give King a little encouragement to get him to share his toys with Royalty.

Hip-hop pops ... gotta love 'em.