Looks like Rihanna's going to have even more in common with her RnB cutie bf, Chris Brown!  Just like Chris, Rihanna is making her acting debut with, 'Mama Black Widow,' also starrig Mos Def, Macy Gray, Anthony Anderson and Kerry Washington. 

You'd think she'd play some sexy vixen type character, but in reality she'll be playing the main character's (who's dealing with the Chicago underworld) sister.  Either way, we don't think you can go wrong with Rihanna on the big screen!  And if you don't have Rihanna's tunes, you can CLICK HERE to cop them from the Desi Hits! iTunes store.  And don't forget to tune into the Girl's Night In show with Manjit for more Hip Hop and RnB tunes!