Rihanna — Burning Up After Chris Brown Split

Exclusive 0408_rihanna_smokes_tmz_articleRihanna”s gone up in smoke after calling it quits with Chris Brown … ripping a fat blunt inside a Hollywood nightclub early Monday morning … and our sources has the pic.

Sources inside Greystone Manor nightclub tell us, Rihanna arrived around 1am with her assistant and security guard … and pretty much kept to herself. She left an hour or so later.

As we reported, Rihanna and Chris Brown are officially broken up … but our sources say it”s nothing new for the on-again-off-again couple. We”re told they”ll be back together in no time.

You might call it a chronic problem.