From porges.net/FamilyTreesBiographies/PorgesWeisweiller.html; enlarged by half and monocolor tint removed. Also posted to Baroness Weisweiller’s new Subalbum here.
Her dress is a half-cone crinoline with the ornamentation, perhaps a draped pardessus, draped in a curve sweeping up and behind her waist.
Keywords: Adeline Helbert, Baroness of Weisweiller, Helbert family, Weisweiller family, Baroness, Spanish, Lady-in-Waiting, Maria Hendrika, wavy coiffure, chignon, fitted bodice, high neckline, tucker, epaulettes, long close sleeves, cuffs, crinoline, pardessus