It's her hair. Hence the Anne of the Thousand Days reference where you have Anne running around with just a pretty hair band (http://www.flickr.com/photos/jackthecat/305744038/in/set-72157594319785875/) until after she marries Henry practically. Since loose hair like that was a symbol of virginity/innocence, the makers of the movie might have actually been going off the period concept and been trying to show Anne as innocent prior to falling for Henry. It really puts a new twist on that movie.