I'm not sure who Savelyeva Ekaterina is, but I see a lot of Norse costumes attributed to her on Pinterest. This one is fascinating to me as it combines a couple things I've been thinking about lately, including a clear Byzantine influence in the cloak fabric. I have not idea how accurate/justifiable this is, but it looks sharp.
I like this idea - wearing the main dress with or without the overdress. Useful for when it's absurdly hot out and you gotta cut back on layers!