A woman's sack and petticoat of blue figured silk brocaded with floral sprays and silver. The sack is open at the front with robings to the waist and elbow-length sleeves with double, scalloped sleeve ruffles. The bodice and sleeves are lined with linen. At the back are two double box pleats, stitched at the neckline. The sack is made of 7 widths of silk and a triangular gore of silk on the side of each front panel. There is no waist seam. The skirts are shaped for a fan-shaped hoop, with pocket openings in the side seams. The hem is faced with blue silk ribbon. The skirt fronts are pleated to form a robing, wider at the bottom. The bodice robings are trimmed with broad silver strip bobbin lace, which continues down the skirt facings, looped with a narrower woven strip lace. These are trimmed with garlands and sprays of flowers of ribbon and wired silk chenille and feathers. The back of the neck band is trimmed with the silk flowers; the sleeeve ruffles are edged with narrow silver bobbin lace and silk flowers. Stitched into each sleeve lining is a large weight. The petticoat is made of 6 widths of silk, with a wide box pleat at the front and flat pleats at the side and back. The waist is bound with blue silk ribbon, which is threaded through a casing either side of the opening at centre back. The hem is faced with silk ribbon. The front is decorated with silver strip bobbin lace, of two widths, arranged in intersecting serpentine lines. Attached to these are small garlands and single artificial flowers made from wired silk chenille, gathered ribbon and feathers. The ensemble was altered, probably in the early 1760s, possibly for another wearer. The robings, originally continuous down the front, were cut at the waist and opened out above. A length of wide blue silk ribbon made the transition between bodice robing and skirt robing, and the lace was rearranged to cover it. The linen lining was cut at the back and ties added to adjust to a larger wearer. The side pleats and pocket openings of the petticoat were unpicked, a band of white silk added front and back to lengthen it, and the petticoat gathered at the sides. Further alterations were made for fancy dress in the late 19th century. A band of silk with hooks was added to the right side of the gown front. Tucks were made (some now removed) in the waist binding of the petticoat.