Her brief Wikipedia article is here.
Posted to the Alexander Palace Time Machine Discussion Forum by Svetabel on 18 May 2011.
Nadejda wears modern-looking low-heel shoes and a dress similar to the one worn by her sister in the previous image. The under-bodice and under-skirt appear to be embroidered.
Keywords: Nadejda Torby, Romanov family, Battenberg-Mountbatten family, Countess, straight coiffure, ribbon headdress, trapezoidal neckline, under-bodice, over-bodice, elbow length close sleeves, lace, waist band, bows, natural waistline, over-skirt, maxi length skirt, necklace, shoes