FILE - This Dec. 15, 2012 file photo shows singer Lady Gaga performing at the Prudential Center in Newark, N.J. Live Nation Global Touring announced on Wednesday, Feb. 13, 2013 that the singer has ... more 
FILE - This Dec. 15, 2012 file photo shows singer Lady Gaga performing at the Prudential Center in Newark, N.J. Live Nation Global Touring announced on Wednesday, Feb. 13, 2013 that the singer has canceled the remainder of her tour due to a hip injury that will require surgery. (Photo by Evan Agostini/Invision/AP, file) less 
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Associated Press
Wed, Feb 13, 2013 8:45 PM EST