Umbrella star Rihanna is extremely worried over the potential release of a sex tape she made with boyfriend Chris Brown reports Star Magazine.

According to the article Rihanna permitted Brown to film the wild tape but, following a reported break in their relationship, is now concerned the tape may find its way online.

A source told the magazine; "Rihanna has no issues with her sexuality. But she'd be mortified if her friends and family found this out." If the rumoured tape does surface it will surely comes as another blow to the Barbados Beauty who is reportedly still in a fragile state following Browns alleged assault on her in February.

This is apparently the predicament that Rihanna currently finds herself in. According to a bunch of hopefully-fabricated reports, Rihanna is worried that, now shes split up with Chris Brown, hes going to make all the sex tapes they recorded together available to the public. Which, you know, would be weird because its perfectly obvious that Rihanna and Chris Brown will get back together the instant this fuss about his arrest blows over.

But, hey, fingers crossed that the Rihanna sex tape exists - after all, theres nothing sexier than watching two beautiful young people performing a physical expression of their love in a seedy, borderline-disturbing manner thats a direct precursor to the moment when he allegedly lost her temper and punched her in the face until her mouth filled up with *lo**, is there? The Sun reports: "US publication Star Magazine is now claiming that the stunning R&B star fears her estranged boyfriend Chris Brown could release a steamy home video the couple allegedly made together.

A source said: Theyve had tons of crazy nights in bed, and Chris has recorded many of them They both have very kinky sides. Its also claimed that Rihanna enjoys role-playing and dressing up as a dominatrix." Role-playing.

Of course the Rihanna sex tape has got role-playing in it. Its just a question of what roles Rihanna and Chris Brown were playing in it. We dont even know if the sex tape is real, but if it is wed put money on one of these three role-playing fantasies taking place in it: