Most Helpful Girl
I think someone else asked the same question last week.
Try for a cut above the standard T-Shirt and Jeans, but nothing fake like Justin Bieber...
-- Ask a barber/hair dresser what suits your face in terms of hairstyle.
-- Take a girl with you when you shop -- not a random girl, but a sister/cousin who seems to have a good fashion sense. You can't trust store clerks, who are there to sell the stuff you're trying on... Select based on your build and coloring. Try to find colors that work with your eyes. Jeans -- not too tight or you'll crush the boys. :,'-( Button-down shirts give a neater look. Depending on how formal you're trying to go, pick patterns for shirts and ties that suit your personality.
-- Pick a scent that matches your personality. DON'T pick anything too fussy; DON'T douse. A bit on the neck and under the arms is fine. Popular lighter scents are pine or "cyprian ocean" -- other stuff is available, but perhaps too musky. DON'T pick a scent that clashes with your deodorant/antiperspirant. ALWAYS use deodorant/antiperspirant.