Its important that when interviewing or working somewhere, you dress just a step above everyone else. You should dress for the position you want, not the one you have. When you feel great and you look put together, you send that perception to those around you. People will make assumptions based on how you look. So what assumption do you want them to make? That you are sloppy, or careless? or that you are classy, and professional? Clothing says a lot about a person. Have your clothing reflect who you truly are.