When he's not flying high on his weed jet, Justin Bieber loves hanging out with his rapper friends. According to MTV, the singer was partying shirtless with Diddy and Rick Ross in Atlanta last night.

Later, the singer posted a photo of himself hanging out with them early this morning in the studio. "#RP @justinbieber 4:00am in Atlanta workin on that #MMM," said Diddy. Looks like Biebs may be working on Rozay's Mastermind. 

[via MTV]

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