Originally Posted by Henry Boogers
Why would you dart the back rather than take in the excess material at the side seams? Just curious, as I've had tremendous success having the sides taken in.
My amateur understanding of this is that it is an issue of shape. Taking a shirt in at the sides will do exactly that, take the sides in. In my experience this leads to a very narrow silhouette if viewed from the front, but still excess fabric in the back if viewed from the side. Darting in the lower back shapes the shirt to the contour of the person's lower back. I think it's really an issue of the curvature of your lower back and buttocks.