My favorite: "Yes, it is faintly reminiscent of an old nurse's uniform as Dear Husband pointed out (what does he know?)"
I do think there's a nostalgia to these pieces, something conservative & Old World, a touch of the style one might expect to see in The Sound of Music.
But will it make us look bigger than we are, pregnant when we're not? Possibly. The clothes here define the shape more than the shape of the person hidden within the clothes. But such might be the shape of things to come...