TMZ reports:

“Real Housewives of Atlanta” stars Porsha Williams and Kenya Moore exploded on each other Thursday … and it was a quick but full-on bitch fight.

Eyewitnesses tell TMZ … the brawl went down during the reunion show. We’re told Porsha just snapped — it looked like a nervous breakdown. She charged Kenya and it was on. There was clawing and hair-pulling before they were pulled apart.

It was bad enough that someone called 911 and the cops raced to the scene. No one was arrested.

As for why they fought — it’s unclear. The people who were there tell us the tension between them had been mounting, but there was nothing obvious that triggered the fight. Here’s what’s obvious to us … Porsha’s on the chopping block, so this may be her way of staying on the show.

Bitches on reality shows. They’re awesome.

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