From the lost gallery's photostream on flickr. Also posted to her Subalbum here.
Here is another photo from the same set as this and this photo.
Keywords: 1878, Grand Princess Elizabeth, Princess Elisabeth of Hesse and by Rhine (1864–1918), Grand Princess Sergei, Елизавета Фёдоровна, Ella, Princess, Grand Princess, Hesse family, Romanov family, Princess, Grand Princess, German, straight coiffure, braided chignon, bangs, earrings, necklace, cuirasse bodice, vee neckline, floral bodice ornament, lace-trimmed under-bodice, lace ruffles, lace-trimmed elbow length tight sleeves