(This type of costume could be made for any nation by using flags and the national colors as drapery over a simple gown. It appears in both the 1887 and 1896 editions of a single manual, perhaps initially inspired by the Victoria's 1887 Golden Jubilee celebrating the 50th anniversary of her rule.)
Skirt of cream bunting, the lions of England painted on each of the battlements in which the edge of the skirt is cut; the Union Jack and Standard of Scotland draped with Prince of Wales' plumes, ostrich feathers; dark blue velvet bodice, made quite plain, and trimmed with gold and small Union Jacks; fan covered with Union Jack; headdress a helmet; effigy of St. George and the Dragon round neck. (Click the image to enlarge.)
Holt, Ardern. Fancy Dresses Described, 5th Edition. London: Debenham & Freebody, 1887.
Holt, Ardern. Fancy Dresses Described, Sixth Edition. London: Debenham & Freebody, 1896.