Abigail Breslin and Willow Smith

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Abigail and Willow join Oprah via satellite from Pasadena, California, where Abigail is busy filming another movie.

Even before Abigail landed the role of Kit, she says she was a fan of American Girl dolls. "I had Addy, Samantha, Kit, Josefina…all of them before I started making the movie," she says.

Though she owned many dolls, Abigail says Kit was always one of her favorites because of her backstory. "My grandma grew up in the Great Depression like Kit did," she says. "When I got to do the movie, we got to talk about that a little bit, so it was really cool."

As a relative newcomer to the movie business, Willow tests her acting chops in this film. "Acting is fun," she says. "You get to be in the scenes—not actually in the background. So you get to be walking and talking, and it's really fun."