BREAKING! Justin Bieber in nightclub brawl with friend… after aggressively shoving girl onto couch

Bad boy Bieber is at it again! Looks like JB's posse have had enough of his bratty ways… with his pal punching the pop star for aggressively shoving a female at Gotha Nightclub in Cannes. And we've got the pics to prove it!

"Justin was partying on his table being very arrogant with his top off," an eyewitness said. "A girl near him tried to climb over the sofa to talk to one of JB's male friends and he pushed the girl back and she fell on the sofa."

"JB started antagonising the male friend… there was lots of pushing and scuffling and he ended up falling over the ice bucket and it all crashed down," the eyewitness adds. Time to cool down, Bieber.

This comes just days after the 20-year-old donned a super-sharp suit at the amFAR Gala in Cannes… where he donated $545k to AIDS research. See how the pics below could've fooled us?

Looks like he'll need more than a Dolce and Gabbana two-piece to tidy up this mess…