White peonies remind me of roses in structure and arrangement of petals, but of course there is a certain difference between peonies and roses. Peonies have more layered petals with a large overlap. In the middle of the petals there is a more golden structure, from where the petals begin their development and growth.
I took some photos of a white peony that has fully blossomed. Nearby was another white peony that was just at the beginning of its development and will bloom very soon.