Upgrade image posted 3 September 2017 from sammlungenonline.albertina.at/Default.aspx. Enter “Josef Kriehuber” as the search term in the "kunstler…” search box.
The portrait on the wall may be of Sophie so the newborn in this portrait would be Rudolf and the standing child is Gisela.
Elisabeth does not appear to be wearing a crinoline in this portrait.
Keywords: 1858, Kriehuber, Elisabeth of Bavaria, Sissi, Sisi, Elisabeth von Österreich-Ungarn, Elisabeth Amalie Eugenie, Wittelsbach Erzsébet magyar királyné, Herzogin in Bayern, Kaiserin von Österreich und Apostolische Königin von Ungarn, Wittelsbach family, Habsburg family, Duchess, Empress, Austrian, Archduchess Gisela, Archduchess, braided coiffure, high neckline, collar, lace, bows, bottom puffed sleeves, puffed under-sleeves, cuffs, full skirt