Madame Jacques-Louis Leblanc (née Françoise Poncelle, 1788–1839)
Jean-Auguste-Dominique Ingres (French, 1780–1867)
Oil on canvas, 1823
Dimensions 47 x 36 1/2 in. (119.4 x 92.7 cm)
Catharine Lorillard Wolfe Collection, Wolfe Fund, 1918 Accession Number MMA 19.77.2

Detail...
Can you imagine the infinite patience as he worked to get the details of her chiffon draping?
I am in awe of his precision!