Apparently the director and producers couldn't make up their mind about how she was to look until the last minute. You will notice that during the cemetery scenes, Jamie's "look" (her makeup and hairstyle) are slightly different from the rest of the movie. The same is true of all of the movie publicity photos made for the movie.
Jamie apparently went through three "looks"
Long hair, no bangs, light on makeup [publicity photos]
Long hair, curled bangs, heavy, pasty makeup [cemetery scenes]
Long hair, curled bangs, almost no makeup [the rest of the film]
There is a fourth "look" if you count her character in the play.