As soon as Mike asked "We don't give feedback about clothes?" my thought was that it's just like personal scent, only easier.
This was, for me, a very fun 'cast, because the clothing expectations for my organization are so upside down. If you dress well, you send the message that you're more concerned about your appearance than about getting the work done. The most successful people (particularly on the science and engineering staff) wear jeans and "work" shirts. Often plaid or flannel in the winter; often Hawaiian in the summer. Good choices in t-shirts are almost revered. Some people wear shorts, even in the dead of winter.
People who wear ties regularly are considered a little odd. People who wear suits are viewed with suspicion, except for very few senior people who have to deal with the government on a regular basis. We have a dress code, but it has only one element that is enforced: You have to wear shoes.
But we still occasionally have problems with people who wear clothing that distracts from the work. Usually this is either a cleanliness problem (often for males) or a skin-exposure problem (usually for females.) This has not been a problem for me for many years, but the next time it comes up, I have a simple, seven-step process for addressing it.