First Job Interview Help I'm Nervous What's the dress Code?

I'm so sorry i don't know much about this but honestly if its one thing i know, you ALWAYS dress as professional as you can. Make sure you look clean and put together and also VERY approachable okay? Seriously, do your nails ( im guessing your a girl, i don't know why), have your hair up, be prepared ( have a pen and paper on you), smell good, and all that good stuff. TRUST ME, they do judge you for the way you look no matter what they say. Another thing and the most important thing, DON'T BE NERVOUS. THEY CAN TELL YOUR NERVOUS AND MIGHT THINK YOU CANT HANDLE IT. Have as much confidence in yourself as possible! Make it look like you know your stuff,even when you don't! Don't worry you WILL learn! Don't you ever show that your nervous or uncomfortable. PLEASE just be confident and go in there and show them you go it. The worst they can do is not give you the job!