Home Singer and actress Beyonce and Mayor Michael Bloomberg attend the unveiling of the Beyonce Cosmetology Center on March 5, 2010 in New York City. (Photo by George Napolitano/FilmMagic) Singer and actress Beyonce and Mayor Michael Bloomberg attend the unveiling of the Beyonce Cosmetology Center on March 5, 2010 in New York City. (Photo by George Napolitano/FilmMagic)

Singer and actress Beyonce and Mayor Michael Bloomberg attend the unveiling of the Beyonce Cosmetology Center on March 5, 2010 in New York City. (Photo by George Napolitano/FilmMagic)

Singer and actress Beyonce and Mayor Michael Bloomberg attend the unveiling of the Beyonce Cosmetology Center on March 5, 2010 in New York City. (Photo by George Napolitano/FilmMagic)

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US President Barack Obama shakes hands with former New York City Mayor Michael Bloomberg during the US – Africa Business Forum on the sidelines of the US – Africa Leaders Summit in Washington, DC, August 5, 2014. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP via Getty Images)