Every job interview i have gone too,i have gotten the job (4 and counting). You want to dress and look the best you can.
This is my routine;
1. Take a long shower (Use some fancy shower wash,e.g lynx,reaaalllyyy does wonders for the self esteem). Wash Everything (lol) thoroughly.
2. Get dressed in a shirt and dress pants
with a nice belt,tuck your shirt in and unbutton the top button. Polish some black boots/shoes and wear black socks with them. Make sure to put on deodorant cos' you'll be sweating during the job interview (Atleast i do).
3.Before the job interview,listen to your favorite band,it'll do wonders for the nerves.
Oh and help me decide my next camera