Rihanna cancelled her Grammy performance due to
bronchitis. She actually arrived at the venue of the awards, the Staples
Center, but did not walk the red carpet. She went straight to
rehearsals but left. It was reported that a doctor on site recommended
that she quit the performance because it could permanently damage her
vocal cords. Rihanna reps said she really wanted to perform but
reluctantly decided she had to listen to her doctors.