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