"The Devil Wears Nada" is the fifth episode of the twenty-first season of the American animated television series The Simpsons. It first aired on the Fox network in the United States on November 15, 2009. In the episode, Marge and a group called the "Charity Chicks" pose for a history-oriented calendar in hopes of raising money for charity, but Marge becomes the talk of the town due to the erotic poses she made after a few drinks of red wine. Meanwhile, Carl is chosen as the newest supervisor at the Springfield Nuclear Power Plant, and hires Homer to be his personal assistant.

The twenty-first season of the American animated television series The Simpsons aired on Fox from September 27, 2009, to May 23, 2010. It was the first of two seasons that the show was renewed for by Fox, and also the first season of the show to air entirely in high definition.