Ohhh.. the odd world of KISS Dolls.... I can't remember exactly what KISS stands for (and I'm too lazy to officially look it up)... but it's K___ Set System, it's basically a modern version of Paper Dolls, and it hails from the land of Japan.
There are several inhancements that have been done to the "format" that include some scripting and whatnot, I've seen some fancy stuff done with it (FKISS).
Like Anime there are a variety of stuff, and like much fan-art type stuff, you run into your share of, well, bad stuff. At the very least many of the "dolls" are anitomically correct.
However they are pretty cool, far too much fun playing dress-up than a guy should ever have
"The Big Kiss" page is one of the best sources for it, but the author had to setup his page on a subscription service (however he does have links and some dolls for free on his site).