Attending the lighting tonight? Check-in on Foursquare at Rockefeller Center Christmas Tree 4sq.com/sOn0El #RockCenterXMAS

MT NBC New York: Midtown will be on lockdown tonight w/ Rockefeller Tree tree-lighting, & visit from President Obama. | bit.ly/smmztV

RT NY Waterway: Rockefeller Center Christmas Tree Lighting Wednesday November 30, 2011, 7-9pm. Bus Route bit.ly/vmuerr

@ShakirahE Nicoletta Gacos The lighting starts at 7pm. #RockCenterXMAS

Tonight catch the WORLD PREMIERE of Justin Bieber's & Mariah Carey's "All I Want For Christmas" video tonight on NBC Entertainment. #RockCenterXMAS

#RockCenterXMAS RT Javier Colon: ::JAVIER NEWS:: Javier rehearsing for the Rockefeller Christmas Tree Lighting tonight.

Rockefeller Tree Lighting is currently trending in the United States! #RockCenterXmas

#RockCenterXMAS RT Savannah Guthrie: Here's Al Roker tweeting as we get ready for lighting of the Rock Center Tree!!

RT Rock Center: #RockCenterXMAS tree-lighting is tonight. Brian Williams has scoop on nation's most famous tree. VIDEO: rockcenter.co/sZNf5V

#RockCenterXMAS RT @giabibble: They're lighting the tree in Rockefeller Center tonight! Christmas officially starts after 8pm tonight! :)

@ErikaMasonhal Thank you! FF Rockefeller Tree in honor of tonight's #RockCenterXMAS lighting. Great photos like this instagr.am/p/WXmMu/

Thank you for spending it with us! RT Case Face: Rockefeller Tree I'm counting down the hours! Here's to my first Christmas in NYC!

@ChefDMurph The show starts at 7pm ET. If you are coming to Rockefeller Center get here early! #RockCenterXMAS

RT l∀UREN: Less than 7 hours till the Rockefeller Tree lighting!

Great shot. #RockCenterXmas RT Ian OBrien Working the Rockefeller Tree Lighting event: pic.x.com/FN3RFMgK

RT Al Roker The crowd gathering for Christmas In Rockefeller Center. Don't forget Coast Guard: Alaska @ 9pm on WxChann twitpic.com/7m8yxg

In just a few short hours the Rockefeller Tree will be lit. #rockcenterxmas instagr.am/p/WrPJI/

The crowds are filling up here for the tree lighting. #rockcenterxmas instagr.am/p/Wratm/

The Rockefeller Center Christmas Tree is lit! #rockcenterxmas instagr.am/p/WtP1B/

Full Time-lapse of the Rockefeller Center Christmas Tree by NBC News & @MSNBC_Pictures on.today.com/vw0oFj #RockCenterXMAS