Your dressing sense and appearance is a reflection of your personality that will surely have an impact on the interviewer. Remember that everything at this point is all about first impressions. You got the interview because you were able to turn something within them when they read your resume. Dressing for success may not be the ultimate measure of whether or not you will get the job, but, it will surely play an important part because after all, once you are hired, you will be representing the image of the company. Every employer out there would prefer to have his company represented by professional and dignified looking employees.