The girls get their sass on with a playful rendition Katy Perry's "Teenage Dream."
04.1.2011 / 06:19 AM EDT by Angeline
Related: American Idol, Haley Reinhart, Pia Toscano, Thia Megia
Video: Pia Toscano, Thia Megia, and Haley Reinhart Sing “Teenage DreamR ...
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