I’m a girl, and I understand why men have a hard time not noticing women who are dressed or acting untzniusly, and I have a much harder time understanding why women have a hard time not dressing untzniusly.
It is far easier to not buy a short skirt than it is to not see someone who is wearing one.
Even as a girl (who doesn’t have a yetzer hara to davka look), I would find it much easier to not buy the skirt than to not see someone wearing it!