From ctgpublishing.com/princess-augusta-wilhelmina-louisa-duchess-of-cambridge-1797-1889-portrait.
This can be regarded as an enlargement of the last image.
Keywords: 1818, Alais, Partridge, Augusta Wilhelmina Louisa, Augusta of Cambridge, Augusta of Hesse-Kassel, Princess, Duchess, Hesse-Kassel family, Hanover family, curly coiffure, jeweled feathered headdress, off shoulder bateau nevkline, modesty piece-bertha, lace, quarter length puffed sleeves, waist band, Empire waistline, necklace, earrings, gloves, wrap