Cannes: Close-Knit 'Eleanor Rigby' Cast Looks Back at Years of Friendship (Video)

UPDATED: Jessica Chastain and co-star Jess Weixler have been friends since Juilliard, and both lived with director Ned Benson in Santa Monica.

The Disappearance of Eleanor Rigby: Them had its premiere at the Cannes Film Festival on May 17, bringing back together director Ned Benson and stars Jessica Chastain, James McAvoy and Jess Weixler. For the trio, it's not just a reunion of the cast but a reunion of friends.

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The actresses and director forged their bonds of friendship over more than a decade. Chastain and Weixler became friends when they both studied at Juilliard, and Chastain and Benson met long before she became a star for her work in Tree of Life and Zero Dark Thirty.

Chastain had even attended the Berlin Film Festival with Weixler when the Good Wife actress had a film, Teeth, in the fest.

"Jess is like my sister in real life," says Chastain. "She went to the Berlin Film Festival, and I went to the festival with her, and I carried her coat on the red carpet and supported her."

And then it reversed when Weixler went with Chastain to Cannes for the first time two years ago.

"When I came here for Tree of Life, she videotaped me on the red carpet," Chastain says with a smile.

After Benson first showed Chastain the script for Eleanor Rigby, she began to ask questions about the female character, which led to two separate stories, Him and Her. A third film, which combines the perspectives -- Them -- is what debuted in Cannes.

"I've always thought he was a beautiful writer," says Chastain of her director. She revealed that she, Benson and Weixler even lived together in Santa Monica when they were first starting out in their careers.

As for James McAvoy, who plays the male lead, he was new to the group but was Benson's first choice for the part.

"I just had to ram-road myself in there like a bull in a China shop," McAvoy joked about breaking into the close-knit group.

Watch THR's interview with the cast above.

Twitter: @Beccamford