In the Shadow of the Empress by Nancy Goldstone

The vibrant, sprawling saga of Maria Theresa, the last of the House of Habsburg, and her three daughters: Marie Christine, Duchess of Teschen and Maria Theresa's favorite; Maria Carolina, Queen of Naples and Sicily; and the infamous Marie Antoinette, Queen of France
Out of the thrilling and tempestuous eighteenth century comes the sweeping family saga of beautiful Maria Theresa, a sovereign of extraordinary strength and vision, the only woman ever to inherit and rule the vast Habsburg empire in her own name, and three of her remarkable daughters: lovely, talented Maria Christina, governor-general of the Austrian Netherlands; spirited Maria Carolina, the resolute queen of Naples; and the youngest, Marie Antoinette, the glamourous, tragic queen of France, perhaps the most famous princess in history.
Unfolding against an irresistible backdrop of brilliant courts from Vienna to Versailles, embracing the exotic lure of Naples and Sicily, this epic history of Maria...