This Michael Jackson foto contains
filzhut, homburg, stetson, trilby, fedora, stetson trilby, snap randhut, schnappen sie randhut, snap krempe hut, porkpie, and porkpie hut.
There might also be
markröhre hut, helm, tropenhelm, topee, topi, pith hut, pith helm, sonnenhelm, mark, hut, and sonne helm.