Back on April 6th, Prince Masahito and Princess Hanako of Hitachi celebrated the 25th anniversary of the sister-city relationship between Funabashi, Japan and Odense, Denmark (Prince Masahito is the Honorary President of Japan-Denmark Association). While it is difficult to see, it appears that Princess Hanako wore a traditional hat with square crown and rolled brim in the same creamy-peach as her suit. 

Photo from The Imperial Family of Japan