Shaya Goldmeier responded to this:
"A few points need to be corrected. First, women wearing pants has NEVER
been forbidden because of the prohibition of Beged Ish, wearing a man's
clothing. The simple reason is that there is an argument among the
commentators (Targum Onkelos and Targum Yonason Ben Uziel) as to what this
prohibition means, either wearing tallis and t'fillin or wearing/using war
weapons (Klai Zayin). There is never a mention of any type of clothing, e.g.
pants. The prohibition has always been because of Tzniut (modesty). [...]"
I think that Mr. Goldmeier misunderstood the commentaries on this verse.
While the Gemmorah [Talmud] mentions the prohibition of women carrying
weapons as mentioned by the Targum Unkelos, and the Targum Yonoson does
mention women wearing Tefillin, however these are NOT the only practical
applications of this prohibition. The Gemmorah also mentions men being
prohibited from shaving their bodies, removing grey hairs or doing other
types of grooming which were normally reserved for women.
In Halacha it is very clear that the prohibition applies to clothing. I will
quote from the Kitzur Shulchan Aruch Chapter 171. "A man is prohibited from
wearing even one garment of a woman, although it is very clear that this is
a man, (And therefore he can not walk around with women as if he WERE a
women, which one would think the entire prohibition stemmed from Y.G.) by
virtue of the rest of his clothes. The same law applies to a woman. She is
not permitted to wear any clothing that is a man's. Not only does this apply
to clothing but it applies to Jewelry and other adornments, each place
according to it's practice and styles. (The translation is mine but it is
accurate. There are many translations of the Kitzur which anyone may use to
read the entire passage, Which is one of the reasons I quote from the
Kitzur, to allow others to read about the entire topic.)
Mr Goldmeir's questions about men wearing wraps, or Kilts is answered by the
Kitzur, "Each land according to their fashion" Kilts in Scotland were never
made for women or made as women's skirts were made. The same applies to
Hats. Women's hats do not look at all like men's hats. However, Pants that
are like men's pants may not be worn by women because of this prohibition.
The same rule applies to women's hats and caps. Having said this I had heard
from a Posek, a halachik authority, many years ago that once non-Jewish
women start wearing pants and hats that are made in the same style as men's
clothing then they are no longer considered men's clothing and would be
permitted to be worn by
women.
Yosey