Whatever its faults, the wizarding world seems to have a pretty practical approach to bodies – no doubt they have a simple and effective solution, and an excellent pain-killing potion.

Yes. I understand why the film might have taken a different route, but in canon it seems pretty plain that formal robes are the main garments, and that though something may be worn underneath for warmth, and/or hygiene, it ain’t jeans, a blouse, or a pretty skirt.