(Nov. 26) — Don’t expect to see Natalie Portman in a nun’s habit any time soon. Is it because she’s an Israeli-born Jewish actress? Nope - it’s because she just doesn’t understand celibacy. Playwright John Patrick Shanley revealed Portman’s mental block at the junket for the film version of his story ‘Doubt’. Page Six reports that Shanley fumbled a question about casting Amy Adams in the role of a young nun.

Celebrity Virginity

Taylor Swift: The country superstar has discussed her desire to stay a virgin until marriage in the past, and is using that same defense to shoot down pregnancy rumors. Responding to such rumors, Swift called it “the most IMPOSSIBLE thing on the planet. Take my word for it. Impossible.”

Getty Images

Jonas Brothers: In February, The Jonas Brothers told Details magazine they have vowed to abstain from sex until marriage. The guys wear purity rings as “promises to ourselves and to God that we’ll stay pure till marriage,” Joe said. The rings are just one of the ways of being different than everybody else out there, they said.

Scott Gries, Getty Images

Daniel Radcliffe : In October’s Details Magazine, Daniel confesses that he lost his virginity at age 16 — and that the woman was older. The age difference “wasn’t ridiculous,” the ‘Harry Potter’ actor says. “But it would freak some people out.”

Bruce Glikas, FilmMagic

Dakota Fanning: At 14, she has made a pledge with her mom to stay clean and abstinent until she’s legal. Who knows what will ensue after she turns 18.

Carlo Allegri, AP

Johnny Depp: Johnny played guitar in a rock band called The Flame and lost his virginity to a groupie at 13, in the band’s van. This verifies that Johnny has always been a rock star.

Pascal Le Segretain, Getty Images

Hilary Duff: Even though Hilary loves showing off her body, she told Elle Magazine in 2006 that “it’s harder having a boyfriend who’s older because people just assume. But (virginity) is definitely something I like about myself. It doesn’t mean I haven’t thought about sex because everyone I know has had it and you want to fit in.”

Gustavo Caballero, Getty Images

Britney Spears: Although Britney said she lost her virginity two years after dating Justin Timberlake, her mother sold out and revealed that Britney actually lost her virginity at 14 to a high school football star.

Steve Granitz, WireImage (2)

Paris Hilton: She allegedly lost her virginity at 15 to Randy Spelling, Tori’s brother, at a hotel in Palm Springs.

Steve Granitz, WireImage (1) / Alexandra Wyman, WireImage (2)

Selena Gomez: The 16-year-old singer and dancer wears a purity ring to declare her stance on sex. “It’s something I made a promise to myself about,” she said.

Kevin Winter, Getty Images

Dustin Hoffman: Dustin lost his virginity at 15 in a darkroom with a woman, 20, who realized “in horror” that she was not making love to his older brother, Ronny. Awkward.

Max Nash, AFP / Getty Images

“I’m trying to think of what the etiquette is on this,” Shanley said. “Well, we asked Natalie Portman, and Natalie was very interested but kept saying she had a problem. And we finally nailed down as to what the problem was. She basically said she didn’t understand celibacy.”