Watching 2 hours of Shaileen Woodley in "Divergent" was incredible. Her hair defines perfection. In the beginning of the movie, she is shown getting about 4 inches cut then it is put up in a thick bun. Thereafter, the bun gradually comes undone as she moves about. Pony tails that you won't believe. She finger combs it several times and allows a side part style to fall about her face. Must see.
Sadly, however, she has cut her hair to a Anne Hathaway pixie for a new movie. She states "it will grow back".