Open Rabbi Falk’s book on tznius – think it’s called “oz vehadar levusha” & you’ll be surprised. The same halachos apply to everyone.
This book is TZNIUS according to Rav Falk, not according to halacha lemaasah. He interjects much of his own ‘spirit of the law’. Following half of what he writes will have you look like an aidel bas yisroel.