At the beginning, after Emily gets thrown from the van, we can see that her sweater is closed and the sleeves are long enough to hang down over her hands. Her T-shirt is long and covers her butt…
fringe
When the camera angle switches, something strange happened…the sleeves got shorter, and then her sweater opened and her T-shirt worked it’s way up over her butt. Either the wardrobe changed sizes, or the actress did.