As essential in spring as in summer, the lightweight jacket is a staple in every woman's wardrobe. Gilets, trench coats, and jackets are the stars of the year's hottest season looks: must-have tools for handling any weather changes with elegance. From plain-colored cotton women's jackets to comfortable jackets made of technical fabric, choose the outerwear that's right for you to pair over cotton sweaters or dress shirts for a more classic touch.