Mary wears a masculine-style suit with jacket and chemisette (blouse) over a skirt with a slight bustle in this photo. The sleeves are barely swollen.
Keywords: Queen Mary, Princess, Queen, Teck family, Windsor family, British, curly coiffure, chemisette, high enclosing neckline, collar, jacket, lapels, long tight sleeves, cuffs, buttons, vee waistline, bustle, close skirt, pins, bracelets