I believe I purchased this three years ago from a local nursery, just not sure which one. But I am going to ask them about it. It was labeled as 'Lady in Waiting', which it is not. I really only came to like Japanese and Siberian irises a few years ago, so I don't know too much about them.
When I checked the database, I found one called 'Ocean Mist' and thought that it looked similar. But again, maybe there are a dozen that look simiar. Am hoping that someone will recognize it, but if irises are anything like daylilies, the chances are slim to none in most cases
May all your weeds be wildflowers. ~Author Unknown