A brutal bout with bronchitis may not have been the reason Rihanna bailed on her Grammys performance, after all.
The "Rude Boy" singer went on a "hysterical" outburst after experiencing great displeasure with her pre-show rehearsal,sources told TMZ.
It's unclear what exactly triggered the apparent incident, but the gossip site reports Rihanna was very upset and screaming loudly.
The 27-year-old singer was scheduled to perform her new hit, "Kiss Me Better," off of her latest "Anti" album at the Los Angeles-based award show, but she dropped out just hoursbefore the show, claiming she had a bad case of bronchitis.
Her rep told the Daily News that Rihanna's doctor told her to rest her voice for 48 hours or else she could risk damaging her vocal chords.
"The antibiotics she has been on for three days did not kill the infection adequately therefore she cannot perform safely," the rep said.