Longer! Longer! “Longer than you even think,” says Tessa Tran, the C.E.O. and creative director of Chan Luu—the Los Angeles-based jewelry and ready-to-wear brand—on the subject of long necklaces, which have come swinging back into fashion for the first time since the early 2000s.

The difference between a 38-inch and a 52-inch is transformative, in Tran’s opinion. In the year and a half since she first started emphasizing big, swinging necklaces in her collection, she’s been adding inches. The ideal sexiest, slinkiest styles hit “below the belt, if you will,” she says. She shared a photo of a prototype of a corded necklace dangling to her waistline with a dozen carved horn teeth capped in sterling silver. It registered as cool, carefree, and a little wild—an antidote to the dainty, polite, and quietly luxurious silver and gold chains and charms of the recent past.