This Genevieve Cortese photo contains
snap brim hat, boater, leghorn, panama, panama hat, sailor, skimmer, straw hat, and campaign hat.
There might also be
dress hat, high hat, opera hat, silk hat, stovepipe, top hat, topper, beaver, green beret, special forces, elite soldier, pith hat, pith helmet, sun helmet, topee, and topi.