Casey Fitzsimmons has 7 Hilary Duff concerts.

Hilary Erhard Duff (born September 28, 1987 in Houston, Texas, United States) is an American actress, singer, songwriter, fashion designer, film producer, spokesperson, and model signed to IMG Models New York. After gaining fame for her starring role on the television show Lizzie McGuire, she went on to have a film career. Her most commercially successful pictures include Cheaper by the Dozen (2003), The Lizzie McGuire Movie (2003), and A Cinderella Story (2004).