From lookingbackatfashionhistory.tumblr.com. Also posted to the Dresses Worn by Maria Feodorovna Albumette here.
This dress has a collar, jabot, and long tight sleeves like a day dress, but made with luxurious materials.
Keywords: 1898, Marison & Cie., Maria Feodorovna (1847-1928), Prinsesse Dagmar, Princess Dagmar, Dagmar (kejserinde af Rusland), Marie Sophie Frederikke Dagmar, Мария Фёдоровна (жена Александра III), Glucksberg family, Romanov family, Princess, Empress, Russian, fitted fan front bodice, square neckline, lace collar, lace jabot, long tight sleeves, lace cuffs, natural waistline, lace peplum, A-line skirt, train