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HOUSTON - JANUARY 30: Singer Beyonce Knowles poses for photos at a press conference to announce pre-game activities for Super Bowl XXXVIII at the Reliant Center in Houston, Texas, January 30, 2004. Knowes will sing the National Anthem. (Photo by Frank Micelotta/Getty Images)

HOUSTON - JANUARY 30:  Singer Beyonce Knowles poses for photos at a press conference to announce pre-game activities for Super Bowl XXXVIII at the Reliant Center in Houston, Texas, January 30, 2004. Knowes will sing the National Anthem. (Photo by Frank Micelotta/Getty Images)