There is no doubt each one of us will not wear a formal dressing to the carwash. This is because we have a feeling and understanding of what to wear and what to not.
No wonder, clothing, as many other items of humans’ appearance, has various social aspects.
You can put on any cloth you like at home, nobody cares if you are fancy-looking or walking around totally naked. But your “interview outfit” will tell everything about you.
Try to look as accurate as you can. IRON your suit. Yes, suit! It has to be representative, formal clothing. If, somehow, it is impossible you still are to wear something black and white. Your purpose is to draw attention to your personality and required skills, not to your new shoes or hair-style.
A skirt for women and a tie for men are required. May be you will have to get used to such an outfit. Put it on at home, stand in front of the mirror and check out how handsome or pretty you actually look.
It goes without saying, the viewer will estimate the way you look from your first step into his/her office. You are to look and feel confident. So, if you have never worn high heels before, better not do it now. Otherwise you will look clumsy and feel awkward.
Besides, resolute step and a straight carriage are required also.
So, to crown it all, all you need is to look professional and self-confident.