The art to shaping, polishing and decorating nails has exploded over the last half decade or so. The foundation of great nail art is the shape and just like fashion, nail shapes go in and out of style. I absolutely adore this handy-dandy chart of the history of nail shapes. Paying attention to nail grooming is a chic and cheap way to update and express your style. My advice is to choose a shape that not only fits your personality but your lifestyle as well, then just have fun with all the colors and embellishments on the market.