She became Baroness Windsor in her own right. Her article in thepeerage is here.
Lady Harriet wears a bouffant coiffure and a dress with a bateau neckline edged with a modesty piece and puffed sleeves in this Lawrence portrait from about 1823.
Keywords: 1823, Lawrence, Harriet Clive, Clive family, Windsor family (non-royal), Clive family, Baroness, British, bouffant coiffure, sweetheart décolletage, modesty piece, criss-cross bodice, quarter length puffed sleeves, waist band, natural waistline, close skirt, floral bodice ornament, wrap