Checklist for the Interview Day
Bathe or shower the night before or the morning of the interview.
Brush and floss your teeth. Use mouth wash.
Your outfit should be clean and pressed. Your undergarments and other accessories should be ready.
Shoes should be polished. Check to make certain the heels are in good condition (no scuffs or damage to the shoe).
Does jewelry match? Is it conservative and tasteful?
Are nails and hands clean and neat?
Do not wear cologne or perfume.
Hair done and neat. Bring a comb with you just in case.
For women: Apply makeup lightly. Bring powder and or lipstick to freshen up before the interview.
For men: Be freshly shaven.
Take a wristwatch with you to keep track of the time, even if it is an inexpensive one. Being on time for the interview is of utmost importance.Source: http://extension.illinois.edu/dress/07interview-03factsheet.cfm