The lost crown - Sarah Elizabeth Miller

Olga, Tatiana, Maria, and Anastasia.
Like the fingers on a hand--first headstrong Olga; thenTatiana, the tallest; Maria the most hopeful for a ring; and Anastasia, the smallest. These are the daughters of Tsar Nicholas II, grand duchesses living a life steeped in tradition abd priviledge.
They are each on the brink of starting their own lives, at the mercy of royal matchmakers.
The summer of 1914 is that precious last wink of time when they can still be sisters together--sisters that link arms and laugh, sisters that share their dreams and worries, and flirt with the officers of their imperial yacht.

But in a gunshot the future changes - for these sisters and for Russia.

As World War I ignites across Europe, political unrest sweeps Russia. First dissent, then disorder, mutiny - and revolution. For Olga, Tatiana, Maria and Anastasia, the end of their girlhood together is colliding with the end of more than they ever imagined.

At the same time hopeful and hopeless, nave and wise, the voices of these sisters become a chorus singing the final song of Imperial Russia. Impeccably researched and utterly fascinating, this novel by acclaimed author Sarah Miller recounts the final days of Imperial Russia with lyricism, criticism and true compassion.