This Benedict Cumberbatch photo contains
boater, leghorn, panama, panama hat, sailor, skimmer, straw hat, fedora, felt hat, homburg, stetson, trilby, sign, poster, text, and chalkboard.
There might also be
dress hat, high hat, opera hat, silk hat, stovepipe, top hat, topper, beaver, hip boot, thigh boot, pith hat, pith helmet, sun helmet, topee, and topi.