A sparkling new season has arrived, and our September issue is devoted to capturing all that glitters. Lisa Armstrong shines a light on fall’s standout trends and must-have pieces, including Prada’s sugary pastels and Michael Kors’s classic camels, plus romantic Victorian blouses and menswear-inspired pantsuits (page 394). Also firmly on our fashion wish list: Spanish-influenced lace and ruffles (page 327), cozy Aran sweaters and shearling coats perfect for weekend getaways (page 383), and an array of brilliant new hues of the moment (page 628). Don’t miss our roundup of the hottest designers to watch, headlined by Gabriela Hearst, whose namesake collection is modeled by the eternally fabulous Lauren Hutton (page 495), and discover how Karl Lagerfeld’s private secretary, Sébastien Jondeau, spends his days shadowing the hardest-working legend in fashion (page…