Wear dress pants, or an a-line skirt, and a blouse, with plain heels, rule of thumb: always dress fancier then the office is, never ever wear sneekers unless you plan to be a P.E. teacher, tank tops are for the beach only, mini skirts should be left in high school, sands are to be left at the party (but if they are professional enough then you can wear them when working there) big jewelry is to be kept in your drawer, and no one wants to see your bra or undies, bright colors are for kindergarten, jeans are for the weekend, cocktail dresses are for parties only, sweat shirts are for boys, jerseys are for sports, hair should be simple and jewelry should be plain, make up should be natural, you are interviewing for a job not practicing to be a clown. You need to shower, and if you smoke wait until the interview is over before you do, coffee looks unprofessional no matter where it is from. keep eye contact, be polite, act mature, and show that you know what you are doing. Good luck!