"Portrait of a quality woman with a blue ribbon", Pierre Mignard I, between 1660 and 1700
Portrait of a young lady, presumably maria anna victoria of bavaria (1660-1690), wife of louis, grand dauphin (1661-1711)
identification proposed by user ecummenic (talk) based on comparison with some portraits of this princess (see images below). Date: between 1660 and 1700. Dimensions: height: 41 cm (16.1 in); width: 34 cm (13.3 in). Medium: oil on canvas. Collection: Unidentified location. École de Pierre Mignard - Portrait de femme de qualité au ruban bleu