Save the Buffalo Wings, baby-back ribs, and barbecue sandwiches for your celebration, after you get the job. Maybe you are the casual type, comfortable in khakis and open-necked shirts. As appropriate as these styles may be on campus, they may be the kiss of death in an interview. Invest in a quality, conservative business suit to wear neatly with the proper accessories. The general rule of thumb in a corporate setting is dress for your boss's job.
Good grooming is essential.
Wear a neat hair style and avoid extremes of hair color, nails, jewelry or makeup. Shine your shoes, press your shirt or blouse and take a good long look in the mirror. Just as your resume is your advertisement, the interview is your sales-pitch. Enthusiasm goes a long way. When asked about a previous employer, even if your experience there was not the best, put a positive spin on things.