Photo: Peter Rosa/Studio D

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Feel that? The crispness in the air that means your flip-flop days are numbered? Ah, fall—the most wonderful time of year when it comes to new fashion. I've sifted through all the trends (culottes! statement coats! fringe!) and found the best ones for you, and I have tons of tips on how to wear them. Read on and get ready to rev it up as the weather cools down.

Turtleneck, Sayaka Davis, $295; Salt, 310-452-1154. Blazer, Calvin Klein, $149; Pants, $54; Shoes, $265;