Despite her mistake, Christina, dressed in all-black-everything -- tailored black jacket and black skirt -- was still warmly accepted by the crowd full of Pittsburgh Steelers and Green Bay Packers fans at the Dallas stadium. As her performance came to a close, the blond singer thrust her hand in the air, making emphasis on the last note she was to belt out. To close out her riveting rendition, four fighter jets flew in the sky overhead.
Watch Christina Aguilera perform 'The Star-Spangled Banner.'
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