Remember

Many people need to be commended on their recognition of, and response to, immodesty.  In our day and in our culture, immodesty is a huge problem and usually is not recognized or addressed.  But there are some groups, Christian or otherwise, that see immodesty as a problem.  This is a good first step.
It is sad that some people critique or mock the followers of Islam for their wearing of burqas.  This choice of attire is, for all intents and purposes, modest.  While the worldview behind it is all wrong, at least it's modest.
The next step though, in this line of thought, is the addressing of vanity. Far too often, someone may be modest, but incredibly vain. While of course it is bad to be immodest, it is just as bad to be vain.  Someone who is wallowing in vanity is really in the same mindset as someone who is immodest. 
This really is about the heart and not externals.  When the thinking is right, right actions will follow.  It is fairly easy to see what someone thinks about appearance by looking at how they attire themselves.