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.

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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