Singer Christina Aguilera joins fellow Grammy Award winners Alicia Keys and John Legend for "CNN Heroes: An All-Star Tribute," airing Thanksgiving night on CNN.
The show, taped before an audience of more than 2,000 at the Kodak Theatre in Hollywood, pays tribute to the top 10 CNN Heroes of 2008.
Liz McCartney, dedicated to helping survivors of Hurricane Katrina rebuild their homes, has been named the 2008 CNN Hero of the Year.
McCartney, of St. Bernard Parish, Louisiana, received the honor at Saturday night's taping of "CNN Heroes: An All-Star Tribute." The telecast airs at 9 p.m. ET/PT on Thanksgiving on the global networks of CNN.
McCartney, who will receive $100,000 to continue her work just outside New Orleans, was selected from among the top 10 CNN Heroes after six weeks of online voting at CNN.com. More than 1 million votes were cast. 
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