This portrait captures four young bridesmaids at a wedding in June, 1891. The reverse of the photograph has an inscription that lists the girls names as well as the name of the bride. The handwriting is not clear and some of the names are not completely decipherable. Three of the four girls share a last name with the bride. The photographer and setting are unidentified. This photograph is significantly larger than a cabinet card.
THE CABINET CARD GALLERY 
This looks like two sittings printed on one matte. Very interesting!