It's a tulip! Yesterday it looked like a very ordinary, creamy white tulip, nothing frilly or fancy. This morning it looked like this. It was completely flat. I didn't know tulips did this.
I don’t think most of them do. Most that I’ve seen lose their petals unevenly so you never get the complete flat circle like this. Good eye to notice and capture it.
Garden tulip, also known as Didier’s tulip. :)