1894 or 1895. Maria Feodorovna (1847-1928) wears a scarf-ruff that completely seals off her neck and a dress with big leg-o-mutton sleeves in this photo. Her husband, Alexander III, died in 1894 so she is in mourning.
The daughters of the kings of Denmark, born in 1847 and her full name was Maria Sofia Federica Dagmar. In 1866 she married Alexander III of Russia and became Tsarina by the name of Maria Feodorovna Romanova.