Katy Perry performs at Colorado high school on her 29th birthday

To celebrate her 29th birthday, Katy Perry decided to go for a "younger" look and dress as a high school cheerleader. She performed a five-song set for the 2,700 students and staff of Lakewood High School. The performance aired live on Good Morning America earlier today, according to MTV News.

The event was part of a contest to see which high schoolers could best lip sync Perry's song "Roar" off her recent album, Prism. Lakewood High School beat out four other finalists. Maybe it helped that their school's mascot is a tiger.

According to the article, Perry talked about why she chose the school as winners. "I'm 29 and I feel great," she said. "I still feel like I'm 13 sometimes. Obviously you can tell by my music and my spirit .... I just loved all the participation and the unification. Of all you guys coming together and roaring in one shot! That was so cool."

During her set, she played "Roar," "Walking On Air," "Firework," "California Gurls" and "Teenage Dream." The students then performed for the singer with a rendition of "Happy Birthday" and gave her a varsity letter jacket and a three-tier cake as a gift.

Check out the contest-winning video here and a replay of Perry's performance here, and let us know what you think in the comments section below!

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