So Western culture is synonymous with God's word or what God says is acceptable attire? Nope.
God gave us a standard that transcends time, place and culture, and yet guides us Biblically, as He knew that there would be differences in attire and such even among Christians.
The Lord only said that men should not wear women's clothing and vice versa, and yet men and women both wore robes in Moses time. Oh, the horror. And they both wore ear rings and nose rings, etc. Oh the humanity. God help Sarah with her jewelry problem. /sarcasm.
The point was, is that men robes were different from women's and vice versa, thus doing what God commanded.
Women and men can both wear pants as long as they are different in style from each other. This is Biblical, morally based, and a common sense approach.
This follows the Biblical pattern, whereas your Western-based women-must-wear-dresses-and skirts standard does not.
Did women start wearing robes in Moses time as an egalitarian statement? We don;t know.
Secondly, while that may have been then, women today don't necessarily wear pants as an egalitarian statement just like Scotsmen don't wear kilts for an egalitarian statement.
Scotsmen don’t wear kilts for an egalitarian statement.”
Well back in the Braveheart day, no doubt that was true.
Today’s Scotland? Yeesh.
Let’s say a woman is reading through her bible. She hasn’t been tainted by neo-evangelicalism. She’s just reading it. She comes to the part where it says, “men don’t dress like women, women don’t dress like men.” She lives in Indiana. What would she think is women’s garments? She’s been to restrooms and knows how our culture works. She has no way of knowing what people wore in Moses time because God doesn’t explicitly reveal it. He just says, don’t mix attire. When God wrote that, He knew that woman would read it in Indiana in 2014.
It is cultural, it’s always been cultural. Just like cursing. God didn’t tell us what curse words are, but we know what they are.