If you're right around 5' with fewer curves, getting artsy or playful about the pattern on your dress is key and oh-so-much fun, by the way. You should shop for a minidress with a busy, statement-making print and work a pair of fancy shoes or booties. Cinching your waist with a belt will work to define your torso and also rise a longer hemline if you feel like your dress flows an inch or two South of where it should. Showing extra leg will also help you appear taller, if that's what you're going for.