For elderly ladies

(This author pulled no punches with regard to dressing your age; no sexy costumes for older women, though at least there are a few suggestions that are not just some sort of old woman.)

For ELDERLY LADIES the following costumes are suitable: --Mrs. Balchriste; Griselda Oldbuck, Dowager of Brionne, My Grandmother, a Lady of the Olden Times, Night, Puritan, some Vanduke dresses, Quakeress, Mrs. Primrose, wife of the Vicar of Wakefield, Peacock, the Duchess of Orleans, a Maltese Faldette, Mother Hubbard, Mother Shipton, a Sorceress, a Gallician Matron, and some Gainsborough and Sir Joshua Reynolds's dresses.

Source: Holt, Ardern.  Fancy Dresses Described, 5th Edition.  London: Debenham & Freebody, 1887.