I don't think her stuff is armor per day, because honestly armoring a Kryptonian under a yellow sun seems pointless to me, it's just usually drawn these days to look like some stiffer material>>92269385
I'm going to stop you right there, because if I tell you details you'all either just jerk off to imaginings that you don't need my help to do, or get depressed because you don't have what I lucked out on.
I don't care about the first, but the second I'd rather not spark.>>92269407
That's true of Superman's costume even when it WAS regular cloth.
Kryptonian powers effectively suspend every rational law of physics and energy we have, and trying to apply some kind of consisten logic to them is pretty pointless overall given just how constantly changing their exact limits and abilities are depending on writer or needs of the plot.