Pearls have long been the go-to accessory for a ladylike look—but what about something a little more rock and roll? "Long strands are an updated, sexier take on the classic pearl choker," says Mikimoto spokeswoman Maureen Gribbin. "[They] allow customers to have fun and create multiple jewelry looks from the same necklace." Ashlee Simpson added Chanel pearls to a striped tank and skinny jeans, while Sarah Jessica Parker recently gave her Mikimoto pearls a downtown spin by pairing them with a little black minidress. Says Gribbon, "By wearing multiple long strands, Ms. Parker applied her signature flair to a pearl jewelry look."

—Betony Toht