Derby hats or Bowler hats were originally worn my working class but pop culture has made it into a British icon. They are less formal as compared to homburg and fedora hats. Derby hats were also worn by actors like Charlie Chaplin, John Cleese and Curly Howard. Choreographer Rob Fosse often included bowler hat into its choreography. In 1972 movie cabaret, use of hats as a prop became its trade mark.