Jenny McCarthy grew up very fast in the public eye as a sexy pin-up girl for Playboy magazine, but as a young girl growing up in Chicago’s South Side, she was deeply religious.

“[My sisters and I] used to lay with rosaries and statues all over our bodies because we thought that would protect us from Satan,” she said. “I used to have Jesus poster, the pope was over there, flaming heart of Jesus was over there. And then I had some ‘I heart Jesus’ t-shirts and bags hanging up.”

In other words: “Jesus was my Bieber,” McCarthy said.

McCarthy became a household name co-hosting MTV’s dating game show, “Singled Out,” in the mid-’90s, but has kept her claim to fame these days as a six-time New York Times bestselling author.

McCarthy’s latest book, “Bad Habits: Confessions of a Recovering Catholic,” chronicles her devout Catholic childhood and growing up poor, both of which left a deep mark on her.

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