I made Luna a faery costume loosely based on this painting by Amy Brown.
Sadly, I don't have a mechanical fish, as that would complete the outfit, and really make my day. I couldn't match the painting completely, but I made it similar and to my taste. I like it a lot, and have been trying to come up with a closer match for a long time before deciding to just go with what I have now. Not a perfect match, but close enough that comparing the pictures, you can tell I based my outfit on the painting (I hope...). I really wish I had some bloomers like the painting, and I couldn't make a striped corset texture that I was happy with, and so went with matching teal. Well, here it is!