7. Katy Perry Vs. Lady Gaga: Just Dance!
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Katy Perry Vs. Lady Gaga: Their iTunes Festival Performances Compared
7. 7. Katy Perry Vs. Lady Gaga: Just Dance!
Both Katy and Gaga arrived on stage backed by an incredible group of dancers to help tell the story of their songs, and you couldn't fault them on their move-perfect routines!