Bieber is ballin’ with the Bawse. During his trip to Cannes for the Film Festival, the pop superstar kicked it with none other than Rick Ross.

The MMG mogul hit the stage at Gotha Club on Monday night to perform hits including “B.M.F.” and “Pop That,” while Bieber played hype man, dancing and ad-libbing his lyrics.

At one point, the “Confident” singer striped shirtless and poured champagne on the crowd as Rozay performed “Box Chevy.”

“me and lil bro @justinbieber talk’n film,music and Mo’ Boss sh!t!!!” tweeted Rozay.

Watch the Biebs pop champagne with the Bawse.