Cardi B delivers a fire verse on long time friend Pardison Fontaine’s track, “Backin’ It Up”. Not only did she deliver #bars but Cardi B is serving Lil Kim Looks in this music video! This is the first time the both have been on a track together, but they gave collaborated on music in the past. Cardi B’s hit single ” Be Careful” was one of those collaborations. The two go way back, and are both now successful artist, both signed to Atlantic Records! Watch the music video above!