The style known as "Aspen Formal" has no official definition, but that's part of the point. As fashion conscious as this fabled resort can seem, it's a feewheeling place defined not be a dress code, but by the fact that there are plenty of reasons to dress up in the first place. Of course, you'll find skiing here on par with the best in the world, but it's when the chairlifts close that you begin to discover the town's mystique. You'll taste it when you try the incredibly fresh sushi at Matsuhisa Aspen, or on a summer's day at the annual Food & Wine Classic. You'll hear it at the world-famous music festival, and you'll see it year-round at film festivals. Only when you call Aspen home can you fully understand its natural beauty, sophistication, cultural opportunities, adventurous spirit, and the subtle nuances of the Aspen-formal style.