You may recall Jack made headlines and was roasted in the streets of social media when he revealed he didn’t know the legendary R&B singer and Ray J were siblings.
In response, Brandy dropped a freestyle diss aimed at the curly-haired Hip Hop heartthrob.
Watch the moment B Rocka hit the stage with Jack Harlow below.
Read Twitter reactions to the pleasantly surprising moment.
What are your thoughts on Brandy’s surprise performance with Jack?