You never get a second chance to make a first impression
General Guidelines on Professional Dress:
You should wear a suit to an interview even if the job you are interviewing is a non-suit work environment. Suits usually have tacking stitches to hold vents in place before purchase; make sure these are removed.Tattoos and piercings (other than ears) should be covered.
Cost: Do invest in quality that will look appropriate during your first two or three years on the job. One good quality suit is sufficient for a job search if that is all your budget allows. You can vary your shirt/blouse and tie/accessories.
Accessories Should be kept simple. Jewelry should be classy and not tacky. Avoid large earrings, big rings, bracelets and attention grabbing necklaces. Only bring one bag or purse.
Hair: Should be clean and neat.
Shoes: Should be in polished condition. Make sure heels are not worn.
Details: No missing buttons, no lint; and don't forget to remove external tags and tacking stitches from new clothes.
Hands: Clean fingernails.
Fit: Clothes should be clean, neatly pressed, and fit properly.
Smell: Perfume or cologne should be used sparingly or not at all. Remember that some people have allergies/sensitivities; you'd hate for that to derail an interview. No odors in clothes. Don't smell like smoke.
Pad folios: Preferred over a bulky briefcase. A small briefcase is also appropriate. But if you have no reason to carry a briefcase, don't; you risk looking silly. In your portfolio bring copies of your resume, transcript, a notepad, pen, and your list of questions for the employer.