From thefirstwaltz.tumblr.com/post/72325497371/carolathhabsburg-royaland-who-is-she.
Here is Empress Sisi wearing the same dress, but without being covered as in the last image and the next image.
Keywords: 1862, Elisabeth of Bavaria, Sissi, Sisi, Wittelsbach family, Habsburg family, Empress, Austrian, long straight coiffure, floral headdress, off shoulder vee neckline, bertha, bows, quarter length sleeves, crinoline, ruching, necklace, brooch, bracelets, wrap