Ashley Tisdale Performs at Rockefeller Center

Last night, was the Rockefeller Center Christmas Tree light up ceremony. Many singers took part as performers including Carrie Underwood, Josh Groban, Celine Dion, Taylor Swift, Natasha Bedingfield, and Ashley Tisdale. The High School Musical star performed "Last Christmas" in front of thousands of tourists who were part of this annual ceremony. Check out the video.