This Ayumi Hamasaki photo contains
fedora, felt hat, homburg, stetson, trilby, hip boot, and thigh boot.
There might also be
boater, leghorn, panama, panama hat, sailor, skimmer, straw hat, dress hat, high hat, opera hat, silk hat, stovepipe, top hat, topper, beaver, porkpie, and porkpie hat.