From eBay; sepia tone removed by gogm.
This appears to be left side of the last image cleaned up with an air brush.
Keywords: Consuelo Yznaga, Counsuelo Iznaga, Consuelo Montagu, Duchess Consuelo of Manchester, Yznaga family, Iznaga family, Montagu family, Duchess, British, curly coiffure, sweetheart décolletage, strap sleeves, vee waistline, over-skirt, necklace, bracelets