Katy Perry Celebrates 29th Birthday With Good Morning America

Katy Perry had some help celebrating her 29th birthday with high schoolers at a Lakewood, Colorado show. The students had won Good Morning America's video contest, in which they taped a lip synced vid of Perry's hit "Roar."

Perry picked the winning video herself, which meant an exciting concert airing on the morning program.

"For me, Lakewood really embodied a whole school spirit," Perry said explaining her decision. "I think they brought everyone together and you saw so many different people coming together to do one shot."

Lakewood's winning video included 2,000 students and staff, singing the song in a single take.

"It was so incredibly crafted," Perry added. "The clubs, the cliques, they all came together and did their own individual thing, but it was so interesting and well done and well organized."

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