From bbc.co.
Lady Penelope wears acoiffure with, possibly, a jeweled chignon. Her dress is like so many seen in 1600s portraits.
Keywords: Dahl, Penelope Herbert, Penelope Naunton, Viscountess Bayning, Nauton family, Bayning family, Herbert family, Viscountess, British, curly coiffure, chignon, trapezoidal neckline, modesty piece, elbow length puffed sleeves, lining, close skirt, necklace, earrings, clasps, wrap