CHOPPA CITY FROM MTVS MAKING THE BAND BEATS UP HIS GIRLFREND . . . THEN BRAGS ABOUT IT ON TWITTER!!

After Chris Brown virtually LOST HIS CAREER for beating his girlfriend, Rihanna, you'd expect that celebs would take DOMESTIC VIOLENCE more seriously.

But not Making The Band reality star/rapper Choppa City. He VICIOUSLY BEAT his girlfriend, fellow rapper Antoinette. Then after ... he TWEETED bout it. Later on he DELETED the Tweets ... but we GOT IT!!