I think they all might have had slight curls or waves to some degree. I think Pocahontas and Mulan might have been the only ones with stick, bone-straight hair.
http://www.mjtstages.com/images/mulan1.jpg
http://www.vw.vccs.edu/vwhansd/his12...Pocahontas.jpg
3c/4a in the front, 4b in the back, with a few sprinkles of 3c in random spots.
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