Neither the Rambam ZT”L nor the Vilna Gaon ZT”L nor the Baal Shem Tov ZT”L did ever advocate women wearing pants, or short-sleeved or sleeveless shirts (uncovering the elbows and forearms), or shorts or short skirts (uncovering the thighs and knees), or low-cut shirts in front or back, or mixed swimming, or mixed dancing, or married women with uncovered heads.
If you will ask any Jewish woman today why she does any of the above-mentioned things, she’ll answer that it’s because she’s “modern.”
Or is it because she’s “Conservative” or “Reform” ?