Having a few copies of something that fits you well is a great idea, find something great and buy a couple in a couple different colors as well. But have a couple sets of shirts so people don't notice and, as you said, scratch their heads looking at you.

> but other things are much much more important. Integrity, getting things done, an inspiring and/or knowledgable personality..

Absolutely. I didn't mean to imply that dressing well was actually important in that sense. It's an easy way to have people think you have more integrity, are more knowledgeable/inspiring/interesting, get more things done. Do with that what you will, your competition will.