Hmmm... definitely a mystery. But it's not surprising. After all, if she's an exhibitionist, she's an exhibitionist, right? Who knows, maybe she ran into somebody on the route who said, "hey, if you like getting naked, why not make some money?" Or maybe she just came up with the idea herself. Here's a link to a free sample gallery with more photos:
http://www.y4nk.com/cc/hairy/hairy-y.../0716-400.html