What is style? By definition, a distinctive appearance, typically determined by the principles according to which something is designed. Some would say style is something you either have or don't. I think individual style can be taught. We all need to be able to express ourselves through our clothes some just need more coaching than others.
So my first styling tip to those style-impaired individuals is.....for women go out and buy a pencil skirt immediately in any color/print. If you already have a pencil skirt then get another one. It looks good on any shape and is sexy without showing all your candy! For men go out and buy a sports coat that fits you nice and slim. A slim sports coat on a man is one of the sexiest things you could ever wear!