A reader, Ok, it was my mom, pointed out this article on making a dress code for academics. The comments are funny also, some from people who get it, and some who clearly do not. My favorite does not apply only to academics, but to everyone who thinks by not dressing up they are somehow fulfilling their desire to be seen as artists or protesters of societal norms:
"More faculty members need to understand that their refusal to play the cultural capital game (by dressing poorly) is just another form of game playing. Anti-style is still a style, it just looks lousy."