An epic collection of hats (51 images)

Prince William's wife Kate, the Duchess of Cambridge, sits onstage at the Canada Day Citizenship Ceremony in the Canadian Museum of Civilization during their royal tour in Ottawa, Ontario, July 1, 2011. UPI/Heinz Ruckemann

Bill Murray adjusts a branch on a hat that was given to him by a spectator after a cypress tree fell onto the 17th green at Spyglass Hill during the AT&T Pebble Beach National Pro-Am on Feburary 8, 2007. (UPI Photo/Aaron Kehoe)

An entrant shows off his hat in the annual hat contest at the Prix de l'Arc de Triomphe horse race in Paris on October 7, 2007. (UPI Photo/ David Silpa)

An invited guest arrives at the Prince's Palace for the religious marriage ceremony of Prince Albert II and Princess Charlene in Monte Carlo, Monaco on July 2, 2011. The Prince and Princess took part in a civil wedding ceremony yesterday. UPI/ David Silpa