Switching gears from Russia to ancient Rome, Vera Wang built her resort lineup around a silhouette that's become one of her signatures: the loose, languid sack dress. "It's about T-shirt dressing," she said of the collection. But there's nothing plebeian about Wang's twenty-first-century take on the toga. Her frocks came in color-blocked satins, brushstroke-print silks, and rich metallics—some accented with luxe bullion collars-cum-necklaces. The designer herself never veers far from all black, but here there were bold jewel tones, as well as surprisingly subtle tie-dyes. Layering, too, was key. A short-sleeve coat in tie-dyed citrine silk, worn over a softly draped olive tunic and slim, cropped amethyst pants, was one of the show's prettiest looks.