Around her neck? An enormous snake necklace, fastened at the head of the serpent, the scaled links of the tail completing the piece. Sound familiar? Fifty years later, actress Katie Holmes wears a ...

A design by Jacquie Aichie, one of Swift's most-worn jewelers, the thin chain wraps around her neck and secures with a snake head embellished by a marquise diamond. Some versions of the necklace ...