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Katy Perry
is definitely proud to be an American!

The 28-year-old showed off her patriotic spirit and curves in a red, white and blue number on Saturday at the Washington Convention Center.

The "Wide Awake" singer was definitely channeling a sexy Uncle Sam style as she took the stage for the 2013 Kids' Inaugural Concert.

Perry headlined the show, and gave President Obama a personal shout out as she performed her hit single "Firework." Usher, along with a few of the "Glee" cast-members also performed at the concert.

On Monday, the brunette beauty kept her Inauguration-inspired couture going as she shared a picture of her tiny Aretha hat for the 2013 Inauguration Ceremonies to honor President Obama's second term in the Oval Office.

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She tweeted, "Big inauguration, tiny Aretha hat," along with the picture of the cute accessory. Click "Launch Gallery" above to see more of Perry's cool costumes!
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