Katy Perry rocks a patriotic ensemble during the children's concert at the 

Katy Perry rocks a patriotic ensemble during the children's concert at the Washington Convention Center to celebrate military families on January 19, 2013 in Washington, DC. -- Getty Images
Access Hollywood
Katy Perry rocks a patriotic ensemble during the children's concert at the Washington Convention Center to celebrate military families on January 19, 2013 in Washington, DC. -- Getty Images
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