Autumn Dressing, Parisian Rules, Stacked for a New York October

The Parisian approach to fall dressing comes down to a few reliable formulas, and the one at the center is piece over piece, built up as the temperature drops. That suits a New York October, when a morning on Madison can begin cool and finish warm. It suits Aspen too, where the light changes by the hour and a coat may come off and go back on before lunch. The appeal is that it's a method rather than a single outfit: you add one layer at a time, and every layer is meant to be seen.

With reporting from Elle.