2011 Rockefeller Center Christmas Tree Lighting

Check out big moments from NBC's 2011 Rockefeller Center Christmas Tree Lighting.

13 photos
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AP
A 25,000-crystal Swarovski star shines atop the Rockefeller Center Christmas tree. The tree's lighting was the culmination of a 2-hour concert featuring Justin Bieber, Neil Diamond and other stars. Click for highlights of the 2011 Rockefeller Christmas Tree Lighting.
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Neil Diamond performed "Joy to the World" at the event, where some 250,000 people were estimated in attendance.
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Cee Lo Green performed a version of "Silent Night."
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"The Voice" winner Javier Colon performed "It's the Most Wonderful Time of the Year."
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The Radio City Rockettes performed (next door to Radio City) shortly before the 74-foot Norway spruce from Pennsylvania was illuminated.
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Singer Megan Hilty was also on hand for the Rockefeller Center Christmas tree lighting in New York.
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Crooner Michael Buble looked dashing at the tree lighting ceremony.
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One of the songs Katharine McPhee performed was "Beautiful."
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Getty Images for NBC
It just wouldn't be Christmas at Rockefeller Center without <i>30 Rock</i>'s Judah Friedlander. Fist-pumps to you too, sir.
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Getty Images for NBC
The lovely Mariska Hargitay of <i>Law and Order: SVU</i> made an appearance. She looked elegant in a head-to-toe nude-colored wrap coat and a gorgeous shimmering necklace.
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Getty Images for NBC
Donald Trump posed for a few photos with WNBC 4 New York's Darlene Rodriguez.
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The 74-foot-tall Rockefeller Center Christmas Tree is lit by 30,000 energy efficient LED lights.
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Another view of the plaza. About 11 million viewers were estimated to take in "Christmas in Rockefeller Center" broadcast live on NBC.
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