According to reports, the fan had posted to Rihanna complaining about her not showing up  to an "Official After Party" for her concert to which RiRi was "advertised" to perform.

Rihanna went ballistic on her!

"you're nothing but a fucking creep scheming in a fucking club at a FAKE ASS AFTER PARTY!!!," Chris Brown's lady raved. "You got played you dirty bitch!! Speaking of role model, just look how u on my page going nutz about a PARTY, all cuz you were stupid enough to believe a FLYER!!! Don't u got a job to be at in the morning??? Ugh! You stupid bitches!!!"