The head sculpt is based on the likeness of Ashley Judd from "Kiss the Girl". There's a couple of things I still need to fix like adding a shadow on her lower eyelids. The nose should a tad longer but at this point I'm too lazy to do any sculpting changes :-).

On a side note, if you make the lower lips less full, round out the eyes by 1 or 2 degrees and smooth down the jaw bone a tiny bit, Ashley looks a lot like Charlize Theron ... hmmm maybe I cheat and do a quick Charlize sculpt from a spare Ashley head cast.