What are the most meaningful factors in the topic of fashion that are recommended to be analyzed in order to assure ourselves good look?

Rising percentage of people currently tend to be keen on looking good. It is implied by the fact that caring about our look is a good way to assure ourselves being successful in our job as well as in our private life. It is related to the fact that looking good is an attractive chance to impress others and show that we are interesting people, who look well as well as care about this field.