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Since busting onto the pop scene with "I Kissed a Girl," Katy Perry has been a controversy queen but the singer is revealing how her religious and conservative upbringing had her protesting some of music's most titillating stars.

In her Vogue cover story, the "Chained to the Rhythm" singer—who is the daughter of two pastor parents and released a Christian-rock album in 2001—shared how she and her family would protest and picket concerts from Marilyn Manson and Madonna. Read the fascinating passage about her childhood below:

"'Amy Grant was our Madonna. We knew about Madonna and Marilyn Manson in my family because we picketed their concerts.' At a Manson concert in Santa Barbara, she handed out pamphlets titled How to Find God. She ended up going in to watch the performance with her youth pastor and, to her surprise, found it 'really interesting and weird—I got it. But my house was church on Sunday morning, church on Sunday night, church on Wednesday evening; you don’t celebrate Halloween; Jesus gives you your Christmas presents; we watch Bill O'Reilly on TV. That was my whole childhood and youth and early teens. I still have conditioned layers dropping off of me by the day.'"

Even more surprising when you consider the fact that Katy would later become pals with Madonna and share the stage with the superstar:

Don't let anyone tell you people don't change. Next, watch our classic interview with early-fame Katy Perry where she discussed her love of Freddie Mercury: