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Singers Christina Aguilera and Enrique Iglesias perform at the halftime show for Super Bowl XXXIV, a 23-16 St. Louis Rams victory over the Tennessee Titans on January 30, 2000, at the Georgia Dome in Atlanta, Georgia. (Photo by Allen Kee/Getty Images)

Singers Christina Aguilera and Enrique Iglesias perform at the halftime show for Super Bowl XXXIV, a 23-16 St. Louis Rams victory over the Tennessee Titans on January 30, 2000, at the Georgia Dome in Atlanta, Georgia. (Photo by Allen Kee/Getty Images)