Rihanna is joined by her mom and granddad at the Queen Elizabeth Hospital in Bridgetown, Barbados, where the singer donated $1.75 million in honor of her late grandmother. The hospital's radiotherapy department was renamed the Clara Braithwaite Centre for Oncology and Nuclear Medicine in memory of Rihanna's "Gran Gran Dolly."
Click through the gallery to see more celebrations of Ri-Ri's good deed well done.