This season you should be prepared to show some skin. Forget legs, decolletage or backs, because this Summer, FabSugar tells us that designers have declared the midriff is this errogenous zone du jour. We like that it's a somewhat unexpected body part to show-off, and when worn the right way a flash of bare waist can look sexy in a youthful and uncontrived way. See Fab's top five crop top looks.