According to Official Guinness Records,
Roger Buckey Legried (USA) has a collection of 100,336 different hats from all over the world, as of 2 March 2010, that he has amassed since 1970.
His collection has become so popular that he has had bus tours to his home. All his hats are cap shapes.
For a complete list of 2010 records, please visit 2010 Guinness Records in United States.