It's not the holidays without the traditional Christmas tree lighting ceremony at NYC's Rockefeller Plaza. It's always a huge to-do sprinkled with some of the biggest names in entertainment! This year's celebration was no different as Hollywood favorites, Victoria Justice, CeeLo Green and Mariah Carey (to name a few!) came out to ring in the holiday season! Check out the gallery for pics of all the stars!

What is your favorite thing about the holidays?