Make way from a promotional obligation to the next, Shakira was spotted arriving at "Late Show with David Letterman" on Thursday afternoon (September 23). Dressed in all black ensembles, "Waka Waka" singer happily waved to fans and posed for pictures before heading into the Ed Sullivan Theatre for her sit-down interview with Dave. The song will be featured on Shakira's upcoming album "Sale or Sole as published next month.