Rihanna showed up to the Staples Center and rehearsed her performance twice but left afterward.



"Based on Rihanna's examination, after Grammy rehearsal today, Rihanna's doctor put her on vocal rest for 48-hours because she was at risk of hemorrhaging her vocal chords," a statement from the singer read. "The antibiotics she has been on for three days did not kill the infection adequately therefore she cannot perform safely."



Attendees on the red carpet said the singer didn't appear in front of cameras and reporters.

Rihanna was set to debut a live performance of "Kiss It Better" from her recently released album, "Anti."