Chris Brown's Sunday night concert turned PG-13 in a hurry ... as after he brought Kayla Nicole up on-stage for a song, he grinded all over her.
Travis Kelce's ex hit the "Breezy Bowl XX" stop at SoFi Stadium, and just before the singer began crooning "Take You Down," he pulled her into a nearby chair to be his muse for the tune.
Initially, Brown danced around Kayla while he belted out the lyrics to the love song .