PHOTOS: Katy Perry's Lakewood High School 'Roar' Concert

Katy Perry celebrated her 29th birthday by giving a private concert at the Colorado high school whose spirited lip dub video to her pop anthem "Roar" became a viral frenzy and won "'Good Morning America's 'Roar' With Katy Perry Contest." Perry got the crowd of thousands at Lakewood High School in Lakewood, Colo., roaring with a spirited performance of her hit, "Roar," which featured a jump-rope routine. She also sang her new single, "Walking on Air," and her classic, "Firework" from her new album, "Prism."
Click here to watch the concert and click here to see the 6 best moment from the concert in GIFs.