Anastasia's album says 1915 at Peterhof... whether that's correct I don't know.. I think Maria sometimes wore her hair up in private before doing so officially....so setting plays a part. Looking at Anastasia's album just now, I can see Ritka M.was wearing her nurses uniform that day and removed the head dress for her photos with Olga. You can see her in it with the, for once, shorter Tatiana in a tiny photo on page 35. Perhaps they picked her up on a whim after her shift? Interesting. Is there a reason there aren't bigger versions of these great photos out there somewhere? They are terrific.