The V&A Lafayette archives have great photos of British court dress
(Georgina Lady Belhaven and Stenton) "Velvet train violette de Parme, opened up the centre with white satin panel and feathers. Bodice and petticoat exquisitely embroidered with chenille, amethyste, and diamonds. Real Duchesse lace, which on the bodice is lined with violet chiffon";
(Hon. May Hamilton) "White satin, with diamond embroidery and lilies. Train of white brocade, turned back down one side with flowers and plumes" (see: The Queen, 19 March 1898, p 507).
Lady Bedford
"Court gown of ivory duchesse satin; corsage embroidered with violets, brilliants and Rhine stones, and draped on one side with Honiton lace, and corselet of gold and jewelled embroidery; petticoat made with panels of the embroidery, opening on one side showing cascades of lace; Court train of petunia velvet, lined ivory duchesse satin, made from the shoulders and turned over at one corner with velvet emroidery, same design as gown and large white plumes caught up with lace. The Honiton lace was made specially for this gown" (see: The Court Circular, 14 May 1898, p 410a).
Court dress: "(Gown of) ivory satin; corsage and petticoat veiled with white embroidered mousseline de soie, with lace and bouquets of snowdrops; train of ivory duchesse, with a border of snowdrops" (see: The Gentlewoman, 19 March 1898, pp 366c & 368a).
If you click on some photos, there's more information on the dresses but not all.