Video: Pia Toscano, Thia Megia, and Haley Reinhart Sing "Teenage Dream" by Katy Perry on March 31, 2011 Tweet March 31, 2011 by Angeline Related: American Idol, Haley Reinhart , Pia Toscano , Thia Megia , Season 10 Episode 22 The girls get their sass on with a playful rendition Katy Perry's "Teenage Dream."
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