With her ultra curvy figure, tiny green bikini, and long blonde hair, former Playboy model Shauna Sand certainly made an impression as she hit the Miami beach today. The 39-year-old model showed off her somewhat striking figure in the itsy bitsy two piece, which left little to the imagination. The former Playmate splashed around in the surf, at one point even running into the sea, revealing an ultra toned figure. The green bikini also showed off the model's deep tan to optimum effect. But there...

We're told not too long ago Spencer was at the Malibu house he once shared with Heidi ... moving out some of his stuff.  Sources tell us Spencer came upon a camera with XXX video of Heidi and Karissa -- and the light bulb went off. Sources say it was then that Spencer decided he could make a fortune selling his "library" to Vivid Entertainment -- much of it featuring naked, fornicating Speidi. We could not reach Heidi and her reps were mum. As for Karissa Shannon -- she tells us...