Of course people care - or at least take an interest in - what others wear. Clothes bore me, though I always manage to keep to the dress code, which is easier for women anyhow. But nonetheless I greatly enjoy seeing elegantly dressed people in their finery arriving for formal night. It is far more fun than seeing people arrive in sweaty T-shirts and grubby shorts, and I think a number of smartly dressed people enjoy the impression they make, so they hope people care. So, as a sort of enjoyable aesthetic experience, I definitely care. On the other hand, I doubt I should notice the minutiae of male dress so long as nothing is too minute. 😀