From Wikimedia.
Lady Dalkeith wears a dress with a bateau neckline, but more like looking at the boat from the front rather than the sides in this van Dyck portrait now in Havana Cuba.
Keywords: van Dyck, Anne Dalkeith, Countess of Morton, Villers family, Douglas family, Countess, British, Lady-in-Waiting, hurluberlu coiffure, trapezoidal décolletage, three quarter length puffed sleeves, full skirt, necklace, earrings, brooch, jeweled bodice ornament, jeweled sleeves, jeweled skirt, wrap