Sad news! Rihanna, who was scheduled to perform at the Grammys [1] on Monday night, has canceled her performance [2] just hours before going on stage, TMZ reports. According to the news outlet, the singer attended rehearsals and arrived at the Staples Center, but did not walk the red carpet. Sources also revealed that Rihanna had been dealing with bronchitis and a doctor, who was on site, recommended that she not perform because she could permanently damage her vocal cords. Rihanna later took to Twitter to apologize to her fans, writing, "#NAVY so sorry I couldn't be there ..... Thanks Grammys and CBS for your support tonight."

#NAVY [3] so sorry I couldn't be there ..... Thanks Grammys and CBS for your support tonight.

— Rihanna (@rihanna) February 16, 2016 [4]