Naturally, you will have your hair neatly groomed. Men know to have clean finger nails, neatly trimmed beards or mustaches, and to leave earrings at home. Men and women know to make sure their shoes are shined. Lots of materials don't stand up to airline flights and car rides. Your choice of clothing may be very tasteful, but if you arrive looking like you slept in your clothes odds are you will lose even if your clothes are designer name brands.
Applicants make the above mistakes every day.
The purpose of the job interview is to present yourself in your best light. Usually you will not know the employers culture before the interview. The job interview is not the place to make a fashion or lifestyle statement. The objective of the job interview, from your perspective, is to get a job offer. Once you have the job offer you can decide whether your style fits in with their culture.