I think they should be in full burqas with eye slits.
There is a mosque on a side street in mid-town Houston very close to one of our high schools. Their attendance is huge and there no longer is parking available anywhere for blocks around when they are having a service. I completely forgot about the traffic situation and turned down the street last week. Came upon at least a dozen women who were leaving service attired in black from head to toe with only slit openings for their eyes. In spite of the fact that the temperatures were in the 90’s, I felt a very cold chill pass over me and thought perhaps I had entered the twilight zone.