Easter Bonnet.

In your Easter bonnet

with all the frills upon it,

You'll be the grandest lady in the Easter parade.

The "Easter bonnet" was fixed in popular culture by Irving Berlin, whose frame of reference was the Easter parade in New York City, a festive walkabout that made its way down Fifth Avenue from St. Patrick's Cathedral.At the depths of the Great Depression a new hat at Easter, or a refurbished old one, was a simple luxury.An Easter Bonnet represents the tail-end of a tradition of wearing new clothes at Easter, in harmony with the renewal of the year and the promise of spiritual renewal and redemption.
Whenever I see this type of hat, I just picture my gran's tea cosy sitting in the middle of the table;- it always looked out of place as I could not comprehend its function?