From Wikimedia.
Maria Elisabeth Wilhelmine wears a simple Directoire-type dress - just plain semi-sheer material cinched just below the bust with sleeves attached.
Keywords: 1800, Maria Elisabeth Wilhelmine of Baden, Zähringen family, Brunswick-Bevern family, Princess, Duchess, German, curly coiffure, square neckline, tight sleeves, waist band, Empire waistline, close skirt, wrap