Someone I'm friends with on facebook posted professional photos of her and a few other women in a park type setting. They were sort of like engagement photos, but with 7 women. After clicking through a few I saw the caption, "Bridesmaid photo session", but it clearly wasn't a wedding.
After more snooping it appears that the bride had all of her bridesmaids get together for a bridesmaids photo shoot months in advance of the wedding.
I clicked around online and it looks like might be a thing... Which is just SO great...