This is relevant, considering that I'm replacing most of my wardrobe at the moment and trying to strategically find new clothes that both suit me and will help me achieve the goals I've set for the near future. Namely, improving my social skills, learning to make better first impressions, and analyzing the effect of what I wear on my daily psychology. (I've noticed over the last few months that when I wear nicer or bolder clothes, I'm more comfortable with speaking my mind and make fewer unconscious attempts to become invisible in social settings. Maybe I could make a statistical study of it and involve other subjects?) I'm going to study the science and psychology of clothes, too — there's a lot of nice research and articles linked in the other comments here.