The designer: He’s known for his historical collections and polished evening wear. This season it’s about: Denim! (A new challenge for the silk-and-cashmere-loving Gn). Still, the rebellious fabric found its softer, prettier side thanks to sweet eyelet pieces, floral embroidery and organza sleeve details. The pieces to buy: Ladylike evening wear doesn’t get much better than Gn, this season’s featuring an 18-century floral embroidery.