Rihanna Mourns Grandmother's Death, Shares Personal Family Pictures (PHOTOS)
"Goodbye #grangranDOLLY get your beauty rest until I see you," the 24-year-old singer tweeted early Sunday morning before posting numerous photos of her grandmother.
Fans flooded Rihanna's account with support -- with Chris Brown's mother, Joyce Hawkins, even offering her condolences to her son's ex-girlfriend.
@mombreezy thank you! Love u mama
— Rihanna (@rihanna) July 1, 2012
Reports say that Braithwaite's illness was probably the cause behind Rihanna's recent disastrous performance in Sweden, in which she accidentally dedicated a song to Norway instead of the Swedish crowd.
Braithwaite was hospitalized at the Memorial Sloan-Kettering Hospital in New York City where the "Umbrella" songstress spent her Father's Day weekend.
Click through the gallery above to see Rihanna's photo tribute.