“any….movement ..the hemline to rise above the knee, …is a violation of the Torah’s standards. “
Granted. But the OP is talking about women who measure the hemline in CMs and wear clothing one size too small. Everything is covered, and the tichel is also (just) within the allowable limit.
Bottom line is, tznius is something that each family needs to address.
We need to stop thinking enforcment (which is impossible).
The new word is compliance. This works when you have people who want to be a part of your (and the greater community’s) ideal. If we present a picture that shows promise and happiness, people will flock to our ranks.
If we present a picture of hypocracy (I’ll not list particulars, but hamaven yovin) then why should someone want to join us?