First Cassie, Now Rihanna: It’s Naked R&B Star Week

Because one topless R&B star wasn't enough for this week... here are photos taken from Rihanna's cellphone. We think that headless shot is Rihanna...unless she's taking photos of other naked girls (you never know!).

Follow updates on this story here.

Rihanna NUDE!!!! (egotastic.com)