And even if her bra DID fit properly, but was cut in such a way that the upper outer portions of the boob were exposed -- in what clothing, exactly, would the average woman expect to display this portion of her anatomy? Other than a swimsuit, or perhaps workout gear?
All right, the fact that I'm sitting here in a large and cozy wool turtleneck sweater (and no bra, because any time I can get away without them I will, ugh) and can barely remember summer may have something to do with it. But even my spaghetti-strap camis are cut closer to the armpit than that.
And even if it were on display... somehow I don't see it as a big deal.