NO MATTER what the state of the world may be, the holidays are a time to celebrate the good things in life, and to do so with style. With this in mind, we present our annual gift guide, filled with treasures to suit every taste, whether you’re shopping for a frequent flier who’s seen it all or a gardening guru with a love of florals (page 135). And when you’re ready to hit the party circuit, our Fabulous at Every Age feature has you covered—preferably in black, and dripping with diamonds (page 170). Elsewhere, Balmain’s Olivier Rousteing shares his perfect Christmas Day (page 196), and Iman recalls the Giambattista Valli dress that changed her life (page 146). Who knows? Perhaps you’ll find one that changes yours. Enjoy the issue.…