From pinterest.co.uk/susy1212/fashions-%7E-1900%7E1910s%7E-2/; enlarged by half.
This is probably a full-length photo of Lily Elsie dressed in the dress seen in this image.
Keywords: 1909, Lucy Duff Gordon as designer, Lucy Duff Gordon, Lucile, Lucy Sutherland, Lady Duff Gordon, The Merry Widow, Lily Elsie, curly coiffure, feathered ribboned headdress, earrings, ruffled cap sleeves, waistband, natural waistline, close over-skirt, close under-skirt, gloves