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