So I was just playing around with some figures I found out on the internet... trying out some new skills like manual posing and pose flipping, smoke effects, HDRIs and exterior sets/lighting... and the next thing you know, I've built up a little story and put together a short piece.
Yeah, I'm still learning stuff about Daz3d, and even though I did a dForce simulation on her shirt, there's some part of it that isn't deforming (her tits, as you noticed). It's something that I'm going to look into, but as this was just an extended exercise in me learning stuff, I didn't worry about it too much here.