Not one...
...But three different dresses. Two in silk. Pretty, drapey, slippery, aggravating, want-to-pull-your-hair-out-sewing-it silks. Clearly I've thought this through.
My fabric for the first version is a brown herringbone wool. Solid, stable, sensible wool. I ordered extra to account for shrinkage, reviewed recommended wool pre-treating suggestions, ran a trial on a test square with beautiful results, and figured this would be the easy one. HA! Of course the full yardage shrank more than ever anticipated, and felted a little bit out of pure spite. I suppose better now than later. Ordered more to make up the difference, ran it through the same process with a twinge of regret, and we're off again towards a slightly fuzzier winter dress.