This Audrey Hepburn foto contains
schipper, leghorn, panama, hoed, zeeman, skimmer, strooien hoed, livorno, panama hoed, matroos, stro hoed, and sombrero.
There might also be
fedora, vilten hoed, homburg, cowboyhoed, trilby, fedora met vilten hoed, stetson, porkpie, porkpie hat, porkpie hoed, vierdeukenhoed, and campagne hoed.