From artuk.org; fixed upper edge and removed spots with Photoshop.
This dress has an A-line skirt from ca. 1820 and gigot sleeves from the 1830s so Charlotte was ahead of her time or this is a retelling of the event.
Keywords: Princess Charlotte of Wales, Charlotte Augusta, Welf family, Wettin family, Princess, British, neo-hurluberlu coiffure, tiara, earrings, bodice, necklace, scoop neckline, modesty piece, long tight gigot sleeves, bracelets, waist band, natural high waistline, A-line skirt, shoes