Marie-Thérèse de Bourbon-Condé wears a deep blue dress over her lace-edged chemise. Her Wikipedia article is here.
Photo credit - Gérard Blot.
Keywords: Marie-Thérèse de Bourbon-Condé, Bourbon family, Princess, French, long curly coiffure, jeweled headdress, vee neckline, chemise, lace, split bodice, elbow length puffed sleeves, engageantes, jeweled arm bands, clasp