I cannot find the Lawrence original for this portrait. Could it be Mrs. Julia Seymour Bathurst?
From the Fine Arts Museums of San Francisco Web site.
Lady Seymour, whoever she is, wears a fairly wide lace collar and probable dual upper puffed sleeves in this Lawrence-based portrait.
Keywords: Lawrence, British, curly coiffure, knotted bun, acarf, lace collar, vee neckline, dual upper puffed sleeves, belt, natural high waistline