This Michael Jackson foto contains
snap randhut, schnappen sie randhut, snap krempe hut, filzhut, homburg, stetson, trilby, fedora, stetson trilby, boater, leghorn, panama, panamahut, seemann, skimmer, hut stroh, bootsfahrer, bein, strohhut, livorno, and panama-hut.
There might also be
sombrero, porkpie, porkpie hut, biber, rizinus, rolle, and castor.