Indeed, this girl is not just beautiful on the outside.
Once on board, the couple spent some time alone on the sundeck where Joanna sunbathed topless before being joined by a rowdy crowd of friends and a film crew.
Joanna previously admitted that she gets her confidence from her mom.
Joanna has done another fully nude photo shoot, this time for BodyBlendz some skin scrubbing thing women use.
Nude, Sexy and Sultry Joanna In July 2005, Joanna posed for Playboy magazine, showing off her hot bikini body on the front cover.
Photograph: Brett Kaffee © Pacific Coast News.