Oops I wanted to add for those doing photo-realistic textures it appears the model texture had its basis from 3d.sk I had got to thinking I had seen this face before.

Warning these are reference photo's on the site and there may be nudity.

a page full from search of this particular lady http://www.3d.sk/index.php?id=10&thumbnail=sm&gender=Woman&age=18-20&body=Face&body_type=Athletic&race=&special=&poses=&emotions=&weapons=&animals=&videos=&premade=&clothes=&clothes_type=&sid=&sf=p&mi=1&mv=1&bs=1&bp=1&rws=4&cr=44&rl=0

If that didn't work here is one of the face
http://www.3d.sk/index.php?id=10&search_query=&action=load&do=gallerydet&pid=170372&cr=44&rl=16

I think this is also her http://www.3d.sk/index.php?id=10&search_query=&action=load&do=gallerydet&thumbnail=sm&&pid=169360&cr=13&rl=0

there are bazillian pictures so not sure on that last one.

Another site I saw linked that had good references you might be able to use

http://fineart.sk/ (which has a number of links on it and some samples)

So if someone here is interested in this type of reference, Though I am know it would require quiet a bit of work to complete a full texture even from the references.  Not to mention onto a model and getting it all put together, lighting scene etc.  But in case someone wanted a starting point.