Show too much and you'll be arrested. We talked about the principles behind that before. There's a proposal in the Netherlands to outlaw not showing enough. The burqa (and the psychological need for the burqa, in instances where women freely choose to cover to escape male gazes) is, to put it lightly, problematic. But I'm not sure that everyone in society has a right to see your face.
N.B. Can't the same arguments about how covering your face insults men by implying that they cannot control themselves be applied to breasts?