When did people stop wearing hats?

When did people stop wearing Hats?
Any movie depicting a time prior to, say, 1943, shows men with their fedoras and women with their huge inventories of hats. No one wears them anymore and it is such a shame. I love hats....I miss hats. They are so fancy and fun. I wonder if I can bring them back? Maybe I'll throw a party and instead of "black tie" or "cocktail attire".....it will be "hats required". So if you want to come to my party, you'd better start shopping now.

A couple of my favorite places http://boringsidney.etsy.com/ (she's from Bothell), http://topsyturvydesign.etsy.com/ and http://kankalinhats.etsy.com/