A true tailor at heart, Stella McCartney masters the art of stylish formality. Made from cotton, this houndstooth single-breasted suit jacket is the essence of empowered elegance, designed with peak lapels and cut for a tailored look. She means business. Pair it with matching trousers and a Bottega Veneta wool shirt. Accessorize with Mach & Mach pumps, a Prada handbag, and matching jewelry.