The layering begins, but to the point where it's not cramping your style. You can still look sexy and chic with a bit of knitwear and actually not worry about keeping warm as a necessity. In other words, you can still afford to think about style first.
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kitted sweater farfetch.com

J.Crew No.2 Pencil skirt

Maison Martin Margiela wool-covered leather boots

Derek Lam Tatum Hobo

Burberry London violet etched detail