Rihanna is worried that a "wild" sex tape of her with boyfriend Chris Brown will find its way onto the internet.
The Umbrella hitmaker, 21, reportedly allowed Brown, 19, to film them having sex - and is worried that the tapes could ruin her.
A source tells American tabloid Star, "Rihanna has no issues with her sexuality.
"But she'd be mortified if her friends and family found this out!
"They’ve had tons of crazy nights in bed, and Chris has recorded many of them.They both have very kinky sides," the Star report stated.
It also suggested that Rihanna enjoys role playing, and dressing up as a dominatrix.
If the rumours are true, Rihanna will join the ranks of
Kim Kardashian,
Paris Hilton,
Pamela Anderson and other famous persons on the
celebrity sex tapes list.