Long outerwear is the silhouette of the season. From left: Fendi coat, $5,500, fendi.com; and stylist’s own jewelry. Sean Suen coat, $1,935, seansuen.com. Louis ...

Luxe outerwear is the secret to looking effortlessly elegant. A designer coat can be the perfect investment. Shop the best picks of 2024, from Burberry, Gucci, and more.