
The
cloche hat is a fitted,
bell-shaped
hat that was popular during the 1920s.
[1] (
Cloche is the French word for bell.)
Caroline Reboux is the creator of the cloche hat.
Cloche hats were usually made of
felt so that they conformed to the head.
[1] The hat was typically designed to be worn low on the forehead, with the wearer's eyes only slightly below the brim.
[1] By 1928-1929, it became fashionable to turn the brims on cloche hats upwards. This style remained prevalent throughout the early 1930s until the cloche hat became obsolete around 1933-1934.

Often, different styles of
ribbons affixed to the hats indicated different messages about the wearer. Several popular messages included: An arrow-like ribbon which indicated a girl was single but had already given her heart to someone, a firm
knot which signaled marriage or a flamboyant
bow which indicated the wearer was single and interested in mingling.
[2]
Cloche hats' popularity and influence were overwhelming.
Couture houses like
Lanvin and
Molyneux opened
ateliers to join
milliners in manufacturing the hats.
[1] The hats even shaped hairstyles: the
Eton crop (the short, slicked-down cut worn by
Josephine Baker) became popular because it was ideal to showcase the hats' shape.
[1]
http://en.wikipedia.org/wiki/Cloche_hat
A straw cloche 1920
http://www.1860-1960.com/

A velvet cloche 1920

A cloche from 1920 , straw with embroiderie