National Christmas Tree Lighting 2015 (30 images)

Reese Witherspoon hosts the National Christmas Tree Lighting on the Ellipse, December 3, 2015, in Washington, D.C.
Updated: Dec. 4, 2015 at 7:47 AM
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First Family participates in the lighting of the National Christmas Tree
U.S. President Barack Obama sings along with daughter Malia as entertainers Trombone Shorty (L) and Reese Witherspoon join in at the conclusion of the National Christmas Tree Lighting on the Ellipse, December 3, 2015, in Washington, D.C. The lighting kicks off the Holiday Season of festivities in the nation's capital. Photo by Mike Theiler/UPI
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