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