From bbc.co.
The upturned center bodice is reminiscent of Renaissance crescent necklines. Otherwise the dress is strikingly plain. The neckline of her dress is lost in darkness, even when the image is made lighter (not shown).
Keywords: 1809, Barber, Harriet Cavendish, Harriet Leveson-Gower, Countess Granville, Countess, British, curly coiffure, turban, off shoulder crescent neckline, quarter length close sleeves, wrap