Move over Willie Wonka, Katy's got a sweet idea borrowed from  the confectionary movie. Katy Perry's new album, "Teenage Dream - The Complete Confection" comes out on Monday, and just in case you were thinking of  NOT buying it, you should reconsider. That's because Katy's hidden a special "golden ticket" in one copy of the album, and the lucky fan who buys it wins an incredible prize.

In a video, Katy explains that the golden ticket holder will get to attend the premiere of her upcoming 3D concert film, Katy Perry: Part of Me.  But you just don't get to see the movie: you also get to walk the red carpet, with Katy herself! "I hope you win," says Katy. "If you don't win, doesn't matter, you're all winners."

The Complete Confection includes three new tracks, plus remixes and alternate versions of songs from the original Teenage Dream album.

Here is some video footage.