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No longer relegated to spring or summer, a wispy floral dress now segues beautifully into autumn. Wear a thin layer under it and a cozy knit over it like Joy Bryant for a cool (and chill-proof) look. Be sure to match the sweater to a color in the pattern so you don't look like a flower child. And avoid anything bulkythe fit should be sleek, not sloppy.
Chiffon with lace trim dress, Kate Moss for Topshop, $145; topshop.com.