Sir Thomas Lawrence died in 1830 and this may be one of his later works.
Upgrade image posted 8 December 2014 from liveinternet.ru/users/leama/post260207729/
Lady Constance's dress has gigot sleeves, a natural waistline, and an A-line skirt suggesting this portrait dates from about 1830.
Keywords: Lawrence - Thomas, British, straight coiffure, scarf, gigot sleevs, off shoulder vee neckline, waist band, natural waistline, A-line skirt, brooch, bracelets