A genealogical sketch of her is here.
From invaluable.com/auction-lot/alexandre-jean-dubois-drahonet-1791-1834-74-c-q5ezuxf3zx.
It looks like the sheer material of Caroline’s over-dress merges at her waist and expands both up and down, but there should be a seam under her belt. Her over-dress also appears to contribute the over-sleeves that probably extend to her wrists.
Keywords: 1825, Dubois-Drahonet, Caroline Marie Groeninx van Zoelen, van Zoelen family, van Toutenberg family, Baroness, Dutch, curly coiffure, over-dress, modesty piece, bateau neckline, full over-sleeves, over-skirt, fitted bodice, quarter length puffed sleeves, belt, jeweled buckle, wrap