Shell is currently a contract photographer for Time magazine. Previously she spent eight years at the White House as the official photographer for Vice President Al Gore. Shell has covered five presidential campaigns to date. Her work has been published in books, newspapers and in major news magazines around the world. Her White House work was exhibited in 2001 at Visa pour L’Image in Perpignan, France. She was also part of the book project and photographic exhibit, THE WAY HOME: Ending Homelessness in America. The work was exhibited in many prestigious venues around the country, including the Corcoran Gallery of Art in Washington, DC.