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SAM CHAMPION, JOSH ELLIOTT, LARA SPENCER, GEORGE STEPHANOPOULOS, SELENA GOMEZ

GOOD MORNING AMERICA – Selena Gomez celebrates her 21st birthday with a concert in Central Park as part of the GMA Summer Concert Series, on GOOD MORNING AMERICA, 7/26/13, airing on the ABC Television Network. (ABC/Donna Svennevik) SAM CHAMPION, JOSH ELLIOTT, LARA SPENCER, GEORGE STEPHANOPOULOS, SELENA GOMEZ