>>937319557
It's just easier to gen a slime girl and give her a skeleton than it is to generate a skeleton girl and give her transparent skin. And since I'm phenomenally lazy, I tend to go for the easy solution.

Here's a less slimy one though, probably closer to what you're asking for. It's annoying to gen though, because it really wants to shape her ribcage like tits instead of laying transparent tits over her ribs.