Inspired by my current obsession, The Hills and The City - where most characters wear easy short dresses paired with high heels. I reckon though how much "shorter" girls wear their dresses in L.A. but still, they look classy and kempt. It all boils down to the quality of fabric maybe?
Reduce the length of your dress without cutting by using a garter belt with a nice buckle. Instead of simply tying it around your waist, gather up your dress to the waist a little and tuck it out from the belt. It will also give you a new silhouette but don't go overboard in making your dress shorter. This trick would make you look taller and slender (fingers crossed :)