We talk a lot about hero pieces. You know the ones; they singlehandedly make any outfit a seriously good one and they never fail to make you feel at your best, even when you just happen to throw them on and go. For us, shirtdresses are the one-and-done answer to our 9-to-5 lives. We count on them constantly to make us look polished (even when we don't feel it) and professional (even when we'd rather be wearing jeans). They can be the simplest to style, whether with pumps or over pants for a more forward take. What about shirt dresses for winter? You'll find a few inventive layering tricks in here, too.