Stunning dress dear. The earth would spin off it's axis and go careening though the universe if I ever wore anything that fancy.
And why settle for only one day? I have a tiara (not as nice as yours, still...) and I keep it in my desk-drawer, so I can whip it out and put it on as needed. When I slap that bitch on my head and tell them: "Because I'm the F-ing Princess, that's why! Now, off with their heads!" - well you'd be amazed at how many arguments it stops dead in their tracks.