Winter hasn't officially arrived yet but its coolest must-have sweater has made a smashing debut. 's vibrant iteration of the classic fair isle sweater is out and about everywhere from Val d'Isere, above, to the Upper East Side, below. This knit is the kind that turns heads, goes with everything and keeps things toasty, making it the ultimate winter wardrobe update before the frost even settles. It comes in , , and for now--but, I bet, not too much longer.

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