The pop singer says her mother humbled her recently after they discussed her naughty photos.
Rihanna will be joined onstage by Ziggy and Damian Marley for a special tribute to Bob Marley.
The reigning princess of pop music says she wants to live her truth and that she can take the "backlash."
The pop singer's donation will help the hospital buy equipment to assist in the treatment of gynaecological cancers.
The reigning queen of pop, Rihanna, leads the pack of nominations.
The 2012 People's Choice Awards recognizes Rihanna and Morgan Freeman.