Being well-dressed is a beautiful form of politeness.
Now of course, different people mean different things by this, but hopefully we can all agree on the principle. If my outward appearance is (within reason) pleasant and unoffensive, and does not unduly distract others, that is a sign of good manners--and a needlessly unpleasant, distracting, or offensive outward appearance is in turn a sign of bad manners.
In Which I Condemn Metrosexuality - I am -again- reheating up a leftover post from a time when I wrote from better-formed thoughts. This one is from 5 years ago as well, with a couple of edit...
4 hours ago