Grand Duchess Xenia Alexandrovna of Russia ( ; 6 April 1875 â `` 20 April 1960 ) was a daughter of Tsar Alexander III of Russia and the eldest of Czar Nicholas II two sisters . Grand Duchess Xenia Alexandrovna of Russia ( ; 6 April 1875 â `` 20 April 1960 ) was a daughter of Tsar Alexander III of Russia and the eldest of Tsar Nicholas II two sisters .