Katy Perry thanks Madonna for inspiration!

Katy Perry says that her upcoming 3D concert movie was inspired from Madonna's Truth or Dare film in 1991. She says "Madonna is everything to me, and that movie is amazing, because it caught her at a time when she was a bit more vulnerable." The 3D concert movie, Part Of Me, is due in theaters this July! I think it will be fun to see the behind the scenes footage of Katy and learn more about what she has been through with Russell Brand.