TO Ujm,Joseph and all you pepole who say tznius hasnt changed in 2000 years, tznius depends on what is considerd pritzusdick in the time and place were you are: 2000 yrs ago woman walked around barefoot or in sandels you would probaly hold that is ossur today.
If there was a style that is accteptable to jewish woman today for arguments sake black stockings (this is not a real example) that started being worn by non jewish girls just to show that they are hefker I think you would agree that it would be ossur for jewish woman to wear them even though it was fine before,
and not only that but it also makes sense that the gedolim of today would write tshuvas saying its ossur that would still be around after this style stopped being worn by non jewish girls for that reason.
However once the black stockings stop showing hefkeirus there would be no reason not to wear them any more.
so to only assur things that wernt ossur before for reasons that wernt nogeia before and are nogeia now and not be “motter” for the same reason just dosnt seem to make much sense…. somthing to think about