Carolath Habsburg notes, "She was verbally and phisycally abused by her husband, just because she gave him 3 daughters before the wanted 'heir', Friedrich Leopold." Posted to the Sex, Royalty, and Vintage blog on 12 November 2010; detail-enhanced by gogm.
Her Wikipedia article is here.
Mara Anna wears an early bustle era dress with a small bustle, trapezoidal neckline, and lots of ruched trim. Her over skirt forms a tablier (apron). Her dress appears to have a natural waistline.
Keywords: Maria Anna von Anhalt, Anhalt family, Hohenzollern family, Princess, curly coiffure, trapezoidal neckline, revers, ruching, long close sleeves, cuffs, natural waistline, bustle, tablier, necklace, fan