1763 Madame d'Egmont in her garden by Louis Carrogis Carmontelle (Musée Condé - Chantilly France)
I believe she is described by this blurb from gw1.geneanet.org/genroy?lang=en;p=henriette;n=d+egmont+pignatelli, "Born 19 April 1719
Spouse(s) and child(ren) Married 27 April 1738 to Charles d'Albert, Duc de Luynes 1717-1771,
Henriette Charlotte d'Albert de Luynes 1739-1744
Charles Marie Léopold d'Albert de Luynes 1740-1758
Marie Paule Angélique d'Albert de Luynes 1744
Louis d'Albert, Duc de Luynes 1748-1807
Charles Casimir Joseph d'Albert de Luynes, Comte de Montfort 1754-1754
Pauline Sophie d'Albert de Luynes 1756."
Posted to livejournal's lamodeillustrée blog by katmax1 on 11 December 2010.
Madame d'Egmont Pignatelli wears a gorgeous dress with a ruffled neck band to cover her neck above a dress with a white stomacher framed by a blue bodice that matches her blue skirt and under-skirt. Some of the lace skirt panels are formed into crescent shapes. The meandering appliqué decorations were fashionable through much of the 1700s.
Keywords: 1763, Carrogis, Countess d'Egmont Pignatelli, d'Egmont Pignatelli family, d'Albert family, Countess, Duchess, French, curly coiffure, floral headdress, hat, cap, high neckline, neckline ruff, stomacher, bows, bodice, elbow length sleeves, engageantes, lace, vee waistline, panniers, over-skirt, ruffles, under-skirt, neck band, shoes