Besides, if a girl is put together and is dressed in nice clothes i’d venture to say most Yeshiva boys do not get the difference between a shabbos to shul dress, shabbos afternoon dress, vort dress, motzei shabbos when you want to dress nice dress, etc.
I’d venture to say you’ve never been a guy. Why do you assume guys can’t tell the difference? Perhaps we don’t know by looking at an outfit which is which, but we sure can tell what looks better.