Katy Perry performs at Rock In Rio 2011

Katy Perry gave an energetic set that included her hit singles from her two studio albums like "California Gurls", "Firework", "Thinking of You", "Hot N Cold" and more. Of course Katy can sing, but that night wasn't her best. She had several bright and colorful costume changes during her show, including the black catsuit she wore for "E.T" and the peacock feathers leotard for "Peakcock.

Below is a video of Katy Perry's full concert. Check it out.