Lady Gaga performs during New Year's Eve celebrations in Times Square

Singer Lady Gaga waves to the crowd as she arrives to activate the New Year's Eve ball during celebrations at Times Square in New York, December 31, 2011. [Photo/Agencies]

Singer Lady Gaga and New York City Mayor Michael Bloomberg dance after activating the New Year Eve ball during celebrations at Times Square in New York, January 1, 2012. [Photo/Agencies]