Singer Madonna performs at the Staples Center as part of her MDNA world tour in Los Angeles, California in this October 10, 2012 file photo. Madonna is the highest-paid musician in 2013 with estimated... more 
Singer Madonna performs at the Staples Center as part of her MDNA world tour in Los Angeles, California in this October 10, 2012 file photo. Madonna is the highest-paid musician in 2013 with estimated earnings of $125 million, easily surpassing singer Lady Gaga and veteran rockers Bon Jovi, Forbes magazine said on November 19, 2013. REUTERS/Mario Anzuoni/Files (UNITED STATES - Tags: ENTERTAINMENT PROFILE) less 
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Reuters | Photo By MARIO ANZUONI / REUTERS
Tue, Nov 19, 2013 1:41 PM EST