We're told the tape is "very explicit" and features 40 minutes of "smoking hot sex." One source who says he has seen the tape put it this way -- "It's the nastiest tape I've ever seen."

We're told the tape was shot with her boyfriend, but we don't know when. A website featuring a preview of the tape will launch soon, similar to the site created specifically for Kim Kardashian's sex tape. - more on this story