Hobbyist in 3D art, having started out with it in 2011; I have written for personal satisfaction since I was a teenager and now offer my skills as a commissioned writer (see my journal for details.)
I am an unabashed kinkster and you'll find common threads of female domination/supremacy, latex and more throughout my work whether fan-fiction or original, consider this fair warning ;)
just put it on the character, I somehow wasn't aware of Geometry shells until I looked it up following your comment, but I've used similar concepts so I might find a use for that now that I know about it, cheers.
The costumes are UV maps, basically take a seam guide or just an existing UV map for the character and use it as a guide to create essentially a skin of what's needed in an image editor. Requires a little time/trial and error but it does the trick. Heads were just morphs I got from somewhere, ShareCG or Renderosity most likely.