A job interview is the doorway to a job offer. Making a good impression is crucial. It takes just seconds for someone to form an opinion about you based on first impressions. This is exactly why your personal appearance is so important at a job interview. Dressing in loud colors or patterns, dressing too casually or wearing lots of jewelry or perfume will draw attention to your appearance. In a job interview, your goal should be to showcase your personality, drive and commitment, not your clothes.