When fashion designer Carolina Herrera created her signature fragrance from a sensual and heady blend of jasmine and tuberose, she noted its scent brought back memories of warm summer nights under the Caracas sky. A decade later, it still ignites thoughts of summer nights. But it also recalls a wonderful dinner party from two months ago, and last night's gala. "This fragrance is a constant in my life," she says. "It is the only scent I have worn for 10 years. It is distinctly part of me."