This is the Inauguration Chapeau designed by Ellen Bloom.
pattern is here: Inauguration Chapeau
I used Vanna's choice in linen. I had to leave out a row of the tie, because the pattern called for 220 yards of yarn and I had only 197 yards. However, I think another row of DC would've made the tie too wide anyhow.
This hat is a little large on the mannequin head, but it fits me perfectly.