Some things haven’t changed since the 50’s. How to Find a Job reminds job seekers to check personal appearance before heading to an interview:
“Did you bathe? Is your hair neatly combed? Are you teeth brushed? Is your breath sweet? Are your fingernails clean? Are your shoes shined? Are your clothes neatly pressed? These may seem like rather personal questions, but you must remember that employers are—and have a right to be—extremely critical. If you are slovenly in appearance, they have good reason to believe that you will be slovenly in your work.”
Take a minute to check your appearance in the mirror (and maybe give yourself a quick pep-talk!) before heading off to an interview. Good luck!