Sisters? Perhaps. Friends? Maybe. This came from the Antique Shop in Park Rapids, Minnesota. I will guess that this is from the late 1880's.. they almost have bangs..the dresses or blouses seem to be heavily pleated in the front.
Thanks for stopping by, do come again:)
Update from Norkio: Big plaids like that also tell us this lady had some means, as matching plaids on a dress required extra fabric. The sleeves with their puffed shoulders are fairly typical of the late 1880s to 1890s.