Katy Perry performed at the 2013 Pre-Presidential Inauguration celebrations in Washington D.C. on January 19, 2013. Katy performed alongside the cast of “Glee”, Usher on Saturday night. The festive concert was helped in honor for children of military families and schools in the surrounding Washington area. Katy was in full “Katy Perry” attire as she was didn’t shy away from her support for Barack Obama, our 44th US President. To the delight of her audience, Katy performed her hits “Fireworks” and “Teenage Dream”.