1900 Empress Augusta Victoria of Germany
From eBay, enlarged and sepia tone removed by gogm.
Empress Auguste Victoria liked to wear big hats, apparently even when mounted, as seen in this M. Ziesler photo.
Keywords: Ziesler, Empress Auguste Victoria, Princess, Empress, Schleswig-Holstein family, Hohenzollern family, German, straight coiffure, feathered hat, jacket, high enclosing neckline, long close sleeves, close skirt, order sash, order bows, equestrian dress