From ifwartistsblog.wordpress.com/tag/evening-dress/; enlarged one quarter.
This dress bears a strong resemblance to her My Dearest dress.
Keywords: 1917, Lucy Duff Gordon as designer, Lucy Duff Gordon, Lucile, Lucy Sutherland, Lady Duff Gordon, brim floral hat, blouson over-bodice, collar, three quarter length close sleeves, cuffs, waist band, peplum, maxi-length close skirt, parasol