Andrew Toth, AP
-- Katy Perry
After Katy Perry performed a concert in support of President Obama on Wednesday (Oct. 24) in Las Vegas, the singer was pleased to get a shout out from the POTUS himself. Wednesday was also Perry's birthday and the president acknowledged this during the speech he gave at the rally. For her performance the "Teenage Dream" singer wore her ballot as a dress with the box ticked, obviously, for the Obama/Biden ticket.