יט הַנְּטִפוֹת וְהַשֵּׁירוֹת, וְהָרְעָלוֹת. 19 the pendants, and the bracelets, and the veils; - I think you are misunderstanding Isaiah - these women wear veils, like some Arabs do today - hence he is not talking about immodest dress at all - it is a contrast of the lifestyle of people before and after punishment. If these codes of dress were adopted today, they would be extremely "modest" according to halacha. The criticism of Isaiah is about other sins of people, which are leading to punishment.