Katy Perry & Usher: Kids' Inaugural Concert 2013!

Katy Perry wears red, white, and blue on stage while performing at the 2013 Kids’ Inaugural Concert during the Presidential Inauguration Weekend on Saturday (January 19) at the Washington Convention Center in Washington, D.C.

The 28-year-old singer closed out the show with a series of her smash hits – “Teenage Dream,” “Part of Me,” “Wide Awake,” and “Firework”.

Usher also performed at the concert. During his set, he sang “Yeah!” “Without You,” and “O.M.G.” for the crowd, which included First Lady Michelle Obama and her daughters Malia and Sasha.

FYI: Katy is wearing a Johnny Wujek costume design outfit.

20+ pictures inside of Katy Perry and Usher performing at the concert…