There are some things about an interview that you cannot control Appearance is not one of them. Consider conservative very carefully. The key word for all business interviewing (regardless of the position you are seeking) is conservative. An applicant can never go wrong displaying conservative demeanor during a job interview. Proper planning beforehand can help make the experience easy, beneficial, and almost pleasant However, lack of planning will be recognized immediately by a competent interviewer. An important part of the pre-planning stage is appearance. Studies indicate that an applicant's appearance is the most important part of a first impression, created during the first few minutes of a job interview.