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Is Amy Adams as sweet in real life as the characters she plays on the big screen? You betcha! And since the success of last Thanksgiving's "Enchanted," she has found fans in the most mundane of places, such as being recognized by moms and dads in hotel elevators.

"The parents say, 'Guess who that is.' And the kid goes, 'Ah-ah,'" Adams says. "And then I'm, 'Oh I better put on the voice,' because they look at me in my sweats, I've just come back from working out. And I'm like, 'Don't tell them. You'll ruin the fantasy for them.'"

And in a moment, Adams will magically transform into the princess Giselle, satisfying her legion of young fans. Except, of course, for the one 3-year-old who just didn't buy it. In fact, Adams admits, "I thought I'd ruined her life."

"She looked at me and she said, like, 'You're not Giselle.' I'm like, 'Oh no, I can't be responsible for her loss of faith and belief!'" Adams recalls. "So, I told her that I was in disguise so the wizard couldn't find me. And I spoke in a Giselle voice, which I can't do [right now] because I'm kind of working, getting rid of a cold."

Adams adds, "I can't help it. They're so cute, and when they look disappointed I'm just like, 'Oh, I know I don't look good without mascara! I agree with you. I hundred percent agree, I do look a little scary.'"

Adams' latest film isn't for the kiddies. "Doubt" is a big-screen adaptation by John Patrick Shanley of his Pulitzer Prize-winning play, a tale of accusation and morality in a New York Catholic elementary school in 1964. Adams plays Sister James, an optimistic and kind nun who bristles under the authority of her "boss," Sister Aloysius (Meryl Streep). At the center of the film's controversy is Father Brendan (Philip Seymour Hoffman), a forward-thinking priest who the very conservative Sister Aloysius views skeptically. Leaned on by both of her superiors, Adams' character struggles to deal with their political war.

Even seasoned veterans of the screen can be intimidated by working with Streep. And while Adams has worked with icons such as Tom Hanks, she agrees it's hard not to be wary of screwing up when you're in the big leagues.

"I think there's a reason these people are where they are, and that's because they're pros and they're going to make sure you're doing your best work by doing their best work," Adams says. But, she also remarks, "It's Meryl Streep. Everybody wants Meryl to like them, you know? She's Meryl. And I already know Philip doesn't like me, so I'm OK with that. You can ask him about that."

And proving that she can't tell a lie even while joking, Adams smiles and adds, "No, no, no. Philip's awesome."

See? Still sweet after all these years.

"Doubt" opens in limited release on Dec. 12.