well, here we have a total one-off; I never do this style of all around crown. But I did. This once. This piece is adjustable, but is meant to fit back on the head and really is just intended to stay the same shape and just sit at different parts of different sized heads. Would work great with a veil sorta situation, but that parts on you, it doesn't need it. I've cut and formed this from a vintage silver-plated platter, the edging is endemic to the older piece.
A while back, I saw a painting of Diana, in which she was wearing a crown that was also a set of horns. I loved it. Folks had been asking for tiaras and crowns for years, and all the sudden, I wanted to make them. So I began making them. That's the whole story.
These crowns are flexible. They can be bent in a little and be worn a bit forward to stand up more, or bent a little out and be worn more as a headband. Will fit pretty much all adult heads. Not intended as a toy for children.