History has seen only a few women so magical, so evanescent, that they captured the spirit and imagination of their times. Diana, Princess of Wales and Jacqueline Kennedy Onassis were two of these rare creatures. They were the most famous women of the twentieth century ~ admired, respected, even adored at times; rebuked, mocked and reviled at others. Separated by nationality and a generation apart, they led two surprisingly similar lives. Both were the daughters of acrimonious divorce. Both wed men twelve years their senior, men who needed "trophy brides" to advance their careers. Both married into powerful and domineering families, who tried, unsuccessfully, to tame their willful independence. Both inherited power through marriage and both rebelled within their official roles, forever crushing the archetype. And both revolutionized dynasties.