For Saturday morning, the Saturday morning dress. Because when you're off to the market, what you really want to do is pop a dress over your head, button four buttons at the small of your back (how does that work again?), and go!
Or maybe not.
Click on the image to see it larger, in a new window, the better to check out the diagram in the lower right-hand corner and confirm that it is, in fact, flat.
[Pattern image courtesy of Lydia Ash, list mistress (listress?) of the Yahoo ]