Jenny McCarthy knows what it was like to have posters of her crushes covering her bedroom wall as a teen. The thing is, her celebrity crush wasn't actually a Hollywood star ... it was Jesus.

In her new book, “Bad Habits: Confessions of a Recovering Catholic,” the 39-year-old TV host and former Playboy playmate discusses her religious upbringing and reveals: "Jesus was my Bieber."

The Chicago native confessed on "Good Morning America" that she attended church at least twice a week, admitting she wanted to be a nun.

“We went to the convent one day, my mom is a hairdresser and was doing their perms, and we opened the door and saw what they looked like in common folk clothing. And had a conversation with them about what I wanted to be when I grew up which was a mom and a nun, and they told me that wasn’t possible, so I knew that wasn’t my destiny," she explained of her decision to pass on being a nun. "I had to take off the habit and put on my push-up bra.”

And while McCarthy took ABC's JuJu Chang on a tour of her former home, she showed the host her childhood bedroom, saying, “I had a Jesus poster, the Pope was over there, I had some ‘I love Jesus’ T-shirts and bags hanging up. Jesus was my Bieber.”

But McCarthy always knew her version of Bieber Fever was different from the typical teen's. She revealed her mother would never allow her to hang up any photograph or poster that wasn't of Jesus. “My mom wouldn’t let us have Fonzie posters on the wall growing up so I was stuck with Jesus, so I couldn’t help but have a crush on him," she told "GMA," adding that when she kissed a boy for the first time, she covered up her Jesus poster.

“I cut out a picture of Cyndi Lauper and pasted her picture over Jesus," McCarthy jokes. "Thanks Cyndi.”

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  • Jack White

    "I was thinking at 14 that possibly I might have had the calling to be a priest. Blues singers and people who are singing on stage have the same feelings and emotions that someone who is called to be a priest might have," <a href="" target="_hplink">White said in an interview </a>with the BBC.

  • Eva Mendes

    The Latina siren told Contact Music that <a href="" target="_hplink">she once considered becoming a nun</a> -- but was dissuaded out of it once she found out how much money they earned (none). Mendes' current beau Ryan Gosling should be relieved.

  • John Woo

    The "Mission Impossible: II" director admitted that if he hadn't become Hong Kong's biggest action filmmaker, he would've pursued a path in education or ministry instead. "I love helping people. When I was a kid I got so much help from the Church," <a href="" target="_hplink">Woo told the BBC</a>. "So I was so grateful to the church, I just wanted to pay back to society."

  • Anjelica Huston

    Despite the fact that her father was an atheist, Anjelica Huston said she aspired to be a nun. "I longed to be indoctrinated. I'd put my mother's old tutus on my head and pretend I was at my First Communion. When I was six, I told my father I wanted to be a nun and he said: 'That's wonderful, honey. When are you going to start?'" <a href="" target="_hplink">she told U.K.'s <em>The Independent.</em> </a>

  • Dolores Hart

    The young Hollywood starlet who gave Elvis Presley his first onscreen kiss famously broke off her engagement to her fiance and became a Roman Catholic nun at age 24.

  • Michael Moore

    The "Fahrenheit 9/11" director attended a parochial school in Michigan and entertained the idea of becoming priest -- or so he says. "I went to the seminary to become a priest," <a href="!" target="_hplink">he told ABC News' Terry Moran</a>, after sharing that his health documentary "Sicko" had come "from a very spiritual place."

  • Dan Aykroyd

    "Did I want to be a priest? Sure...yeah, I wanted to for about 9 seconds. This is not to take away from the excellent high school education I had at the hands of great priests/teachers and the blessed sisters who fed our student body at St. Pius X Minor Preparatory Seminary for Boys," the <a href="" target="_hplink">"Ghostbusters" star wrote on his Facebook page </a>in March 2012.

  • Martin Scorsese

    News that the veteran director was taking on the Jesuit priest drama "Silence" only highlighted his own ambitions to become a priest, before he pursued film. Scorsese went to numerous Catholic schools and counts Father Francis Principe, of Cardinal Hayes High School, as one of his biggest mentors as a young boy. And after viewing "Taxi Driver" in 1976,<a href="" target="_hplink"> Father Principe told the young Scorsese</a>, "I'm glad you ended it on Easter Sunday and not on Good Friday."

  • Tom Cruise

    The world's biggest movie star was<a href="" target="_hplink"> once enrolled at St. Francis</a>, a seminary school in Ohio. Now, he's reportedly one of the highest-ranking officials at the Church of Scientology.

  • Anne Hathaway

    "When I was younger I thought about becoming a nun for a while. You know how it is when you're growing up and you're going to be a lot of different things, but I actually wanted to be an actress before I wanted to be a nun. The nun was more of a side-bar thing," the "Les Miserables" star <a href="" target="_hplink">said</a>.

  • Danny Boyle

    The "Slumdog Millionaire" director and master of the opening ceremonies of the 2012 London Olympics thinks there is little difference between his vocation and priesthood. "It's basically the same job -- poncing around, telling people what to think," <a href="" target="_hplink">said Boyle</a>, who was raised Irish Catholic.