About whether or not clothing defines us, I personally believe that it does define us since the way each one dresses reflects the personality of that human.
Also when we go shopping each person is going to look for their own tastes. According to the opinions that person has, he will dress in one way or another.
Finally, to summarize, we can say that according to the emotions of each one, the way they dress will change... The happier they are, the more colorful they will dress, on the contrary, the more negative thoughts they have, the duller their clothes will be.