The singer, who took the intimate shots herself on her mobile phone, claims hackers swiped them off her computer and leaked them onto the Internet.
She wrote on twitter: "It seems that someone has hacked into my computer...that's real foul and evil...
Cassie's career has stalled since her debut 2006 single and recent live performances have come under criticism, despite working with hip-hip mogul Diddy - whom she's been romantically linked with.
>>> sharpy mi hear he offer u 5 $ cuz u only have one titty