Left image from www.bildindex.de; right image, a derivative, from Wikimedia. A very small color version of the left image is here She actually wore a red dress.
Philippine Charlotte appears to be wearing a wig over her own hair, vividly depicted in the derivative portrait. These images and the last image show the style that characterized most of the 1700s took root in German locations in the 1730s - 1740s.
Keywords: 1744, Pesne, Philippine Charlotte, Princess, Duchess, Hohenzollern family, Brunswick family, German, curly coiffure, hair jewelry, choker neck band, bows, scoop neckline, modesty piece-bertha, lace, three quarter length close sleeves, forward-back flared engageantes, tabbed bodice, vee waistline, panniers, over-skirt, girandole earrings, bracelets, robes, regalia