Know how I select what to wear for the day? Grab a pair of slacks (from the battered, everyday drawer OR the dress up, going to town drawer); grab a top that goes with the slacks without making my eyes water. Grab underthings, etc. Get dressed. The fashion-obsessed aren't yet sure of themselves and how to fit in. So they concentrate on the "outer look" instead of the "inner fit."
My children would testify that my husband and I are the least fashionable people alive. We are completely happy to live in jeans and t-shirts. If we are going to wear designer labels, we will insist on being compensated for advertising.