Rachel McAdams at the premiere of ‘Are You There God? It’s Me, Margaret’.Photo: Eric Charbonneau/Shutterstock

Rachel McAdams Lionsgate’s ARE YOU THERE GOD? IT’S ME, MARGARET Los Angeles Premiere

Rachel McAdamsis drawing on her experiences as a mom in her latest film project.

Speaking to PEOPLE at the Los Angeles premiere ofAre You There, God? It’s Me, Margaret, the actress opened up about how her being a parent has helped her play the mother of the title character from Judy Blume’s classic coming-of-age novel.

“As a mom, it’s not too, too hard to find the messiness, the privilege of getting to watch a child grow up and be their parent,” adds McAdams, who has a son and daughter with partner Jamie Linden.

“I think that’s a really lucky place, a spot to be in, and I think Barb feels that,” she adds about the movie, which centers around the changing life of Margaret Simon after her family moves from New York City to the New Jersey suburbs — while also “going through the messy and tumultuous throes of puberty with new friends in a new school,” according to a synopsis.

Rachel McAdams at the premiere of ‘Are You There God? It’s Me, Margaret’.Unique Nicole/GA/The Hollywood Reporter via Getty Images

Rachel McAdams attends “Are You There God? It’s Me, Margaret.” Los Angeles Premiere

Lionsgate released a trailer for the film in January, which showed Margaret and her peers learning about puberty, purchasing bras and feminine hygiene products for the first time, experiencing their first kisses, and daydreaming about life at 19, with a montage of clips set toGeorge Harrison’s iconic 1970 song “What is Life.”

“I think she’s still getting over having parents that didn’t support her. So she wants to be incredibly supportive of her daughter, almost to a fault,” McAdams adds about her character’s role in the movie.

“I don’t think she’s a smothering mother at all,” adds theMidnight in Parisstar, who wore an elegant red cutout gown with red strappy heels to the premiere, “but she’s almost too hands-off in some ways, certainly when it comes to the religion. She’s got her own shadows there, and I think it takes her a minute to realize Margaret can handle it.”

McAdams recently told PEOPLE she was thrilled to have the novel’s author Blume on set during the making of the film.

Speaking to PEOPLE on April 12, Blume, 85, revealed that watching the movie being made after 50 years was “the experience of a lifetime!”

David Livingston/Getty Images

Judy Blume attends the 17th Annual Los Angeles Times Festival of Books - Day 2

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“I don’t know what 85 means,” Blume told people. “But I feel that there’s a lot more that I want to do. I love doing this.”

“I’m an intuitive writer,” she added about her 29 books for children and adults (with 90 million copies sold). “I don’t analyze a lot and the story just comes.”

As for the experiences she has drawn on in her own, she added: “Keep moving. Keep dancing! Keep doing whatever you can do.”

Are You There God? It’s Me, Margaretis in theaters from April 28.

source: people.com