It's a really interesting photo. Only seven men but nineteen women (if I've counted correctly, and the person standing at the right isn't a chap in drag!). I wonder if it's a publicity shot for a theatrical production? There are many characterful faces who look very comfortable in front of the camera, rather than the scared rabbit look often seen. The comical elements of the fellow on the right and boy at the front just add to the idea of it being a performance.
If it turns out to be a family wedding photo then please accept my apologies for casting nasturtiums! They all look great fun
Heather
P.s. could the two identically dressed ladies be bridesmaids or is it too early for that to be likely? Also I think the cross on the other lady's hat looks like a bow rather than a penned mark.