Here's a quick update on the skirt. I'm currently working on adding a hemline and rendering out an animation. I found that the best way to handle the two-level pleated skirt was to have them only collide with a proxy cone around her waist, one per skirt layer. It makes it go faster, and also has the added benefit of dodging intersections.
I'm reeeeaally itching to just dive into materials and texturing, but am trying to be sensible and hold off.
Stay tuned for video!