This Prinz William und Kate Middleton foto contains
filzhut, homburg, stetson, trilby, fedora, and stetson trilby.
There might also be
boater, leghorn, panama, panamahut, seemann, skimmer, hut stroh, bootsfahrer, bein, strohhut, livorno, panama-hut, geschäftsanzug, and business-anzug.