On Tuesday, the Imperial Religious Ceremonies commemorating the 200th anniversary of the death of Empress Go-Sakuramachi (1740-1813) were held both in Tokyo and Kyoto (the Empress was the last female monarch in Japan). Princess Akiko attended the ceremony held at the mausoleum of the Empress in Kyoto. She wore a simple black pillbox hat that I thought was befitting the somber occasion. I think, however, I would have preferred it worn a little further back on her head.
Photo from The Imperial Family Of Japan
Royal Hats 
I just love pillbox hats and this one is very fitting for this kind of an anniversary. Do you know what is the importance of the white bell or tassel she is carrying?
It is just hanging on the fan she has in her hands, I suppose. An ornament, nothing more.
I do like this hat very much, and it would also be nice in different colors, say a dark red or royal blue.
This is a lovely hat, but you are right…it does need to be further back on her head.