Hi, not discouraging anyone from answering here, but fyi, you may be interested in some previous threads on this topic

• Why was it so common to wear hats in public in the early 1900s? How were hats viewed in this time period and how did this style fade out of popularity? featuring /u/colevintage <-- Also, follow the links further down the thread to two more related posts

of possible tangential interest:

• "[J. F.] Kennedy despised how he looked in hats and usually refused to wear them - despite howls of protest from habderdashers whose hat sales took a precipitous downturn in the 1960s" (Barbara Perry). What factors led to the downturn in menswear hat sales in the 1960s? featuring /u/chocolatepot