Rihanna was screaming and hysterical before she bailed on the Grammys, but there are conflicting stories about what triggered her outburst.
Sources connected with the show, and several sources who were not connected but present at the show, tell TMZ ... the singer was loudly expressing displeasure over her rehearsal. They say she was loud and upset and, as we first reported, bailed on the event.
I too do wish she was able to perform, but, it's over and done with already. She still has a lot of other promo she can do, even though the Grammy's would have been great for it.