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John Mayer, Katy Perry

WASHINGTON, DC - JANUARY 21: Musicians John Mayer and Katy Perry attend the presidential inauguration on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by Alex Wong/Getty Images)

Hollywood Invades Washington, D.C.

January 21, 2013

Stars including Beyonce and Jay-Z, Katy Perry and John Mayer, and Eva Longoria all headed to the nation's capital for President Barack Obama's inauguration.