On screenshots sometimes she is blond sometimes black-haired. I think she will have three kinds of appearance according to three classes.
http://games.1c.ru/kingsbounty_princess/?type=gallery
http://www.katauri.com/
Edit: Oops! It looks like what I thought to be a blond girl on a screenshot indeed is a male paladin from the original KBL (I didn't play as paladin yet). He is too nice for a man...
Oh, my god! Looks like black (mage?) Amelie uses a short skirt being ahorse. She is hardcore masochist!