Because details are so hard to see on black, there aren't many places in the film where you can really see Magenta's pleats. There are 3 on her sleeve that appear to end before the shoulder seam, and 3 down each side of the front.
You can also see that her white collar isn't completely attached in front.
Also notice that her sleeve stops right above the elbow; longer than your average "short sleeve" dress.
