To be dressed overly conservatively can be as damaging as being dressed too informally. How do the existing employees dress? How do you find out the company dress code?
Go and see. If you are unable to get enough information through your background research or your contacts, visit the company and see for yourself. If you live within reasonable distance visit the reception or other public areas such as Sales or Customer Service and tune in to the company dress code
Visit the company to gather brochures, company reports etc that will help you generally to prepare for your job interview. Observe what the current employees are wearing.Sit in the reception area and just watch for a while. Try to time your visit when employees are arriving or leaving the company or at lunchtime to be able to observe accurately
If it is difficult to get to the company you can phone and ask the receptionist, "Can you please tell me about the dress code at your office so that I can dress appropriately for my interview?"
Alternatively you can phone and ask Human Resources about the appropriate job interview dress code, they usually are happy to assist. You could phrase your question as follows: "I have an interview with Mr. Jones for a Customer Service Agent position. Could you tell me what would be the appropriate way to dress for this interview?"
Other sources of information about the right job interview dressinclude recruiters who deal with the company, customers and suppliers.
Use the tips and techniques on conducting company background research to get information on the company environment and culture including the company dress code. Remember that environments such as banking, accounting, insurance and law often have a more rigid dress code than fields such as retail, advertising and sales which may follow a more casual manner of dress.Find out about different interview dress codes for different jobs.
Generally it is advisable to dress for a position at a more senior level than the one you are interviewing for. Job candidates are expected to dress more formally for the job interview than once they are in the position. Dressing more formally for your job interview sends the message that you are aware of and respect the importance of the interview situation.
Prepare your job interview dress beforehand by spending some time finding out about the company dress code. This will ensure that you arrive at your interview both confident and comfortable that you look the part.
A good article on Dressing for a Job Interview gives useful advice on the style, color and fit of interview clothes.
Source info: best-job.com
