Most people are highly visual; they therefore judge you by the way you look on the outside, the same way you judge them.
Look the part! If you want to be a big success, to be accepted and respected by others, you must look like the kind of person others can admire and relate to.
It is absolutely amazing how many people hold themselves back, year after year, because of their ignorance or inattention to their external appearance. No one has ever taken them aside and told them how important their dress and grooming are to getting paid more and promoted faster.
Numerous articles and books have been written on the subject of professional image in business. I have personally studied the subject for years ...