This Michael Jackson foto contains
sombrero, boater, leghorn, panama, panamahut, seemann, skimmer, hut stroh, bootsfahrer, bein, strohhut, livorno, panama-hut, snap randhut, schnappen sie randhut, and snap krempe hut.
There might also be
porkpie, porkpie hut, biber, rizinus, rolle, castor, kleid hut, hut hoch, opernhut, zylinderhut, ofenrohr, deckel, biber, kleiderhut, hut, seidenhut, topper, kleid, hi-hat, opera hut, and zylinder.