Kate Mara calls first film with sister Rooney ‘very special’ experience

Show summary Hide summary

• 🔥 Quick Facts
• A ‘Very Special’ Experience After Years of Waiting
• Playing Identical Twins Who Speak in Perfect Unison
• Behind the Scenes: Production Details and Star-Studded Cast
• The Incredible True Story Behind the Screenplay
• After Decades in Separate Careers, Sisters Finally Reunite on Camera
• What Does This Groundbreaking Sister Project Signal for Hollywood’s Future?
  • Sources

Kate Mara just revealed the emotional truth about filming her first movie with sister Rooney. The breakthrough collaboration marks a historic moment. Real-life siblings transform into fictional twins in legendary director Werner Herzog’s “Bucking Fastard.”

A ‘Very Special’ Experience After Years of Waiting

Kate Mara, 43, opened up about the emotional impact of finally working alongside her younger sister Rooney, 40, in an exclusive interview. Speaking at the Los Angeles premiere of “Imperfect Women” on March 10, she described the entire experience as “very special.” The two actresses had never shared the screen before, making this collaboration a milestone moment in both their careers.

“The script is unlike anything we’ve ever read before,” Kate revealed. She emphasized how meaningful it was to work with legendary auteur Werner Herzog, calling him “a dream director for both of us.” The decision to join the project was immediate and unanimous across both sisters.

Playing Identical Twins Who Speak in Perfect Unison

The film follows Jean and Joan Holbrooke, twin sisters so deeply intertwined that they speak in unison, share romantic feelings, and mirror each other’s dreams. Kate explained the complexity of the dual role, stating, “We’re basically playing the same person.” This mirroring creates an eerie, poignant dynamic unlike typical sister characters seen on screen.

According to the film’s plot synopsis, the twins “search for an imaginary land called the Orkneys where true love is possible.” Their journey involves digging through an entire mountain range, a visual metaphor for their desperate connection to each other and their shared obsession with one man.

Behind the Scenes: Production Details and Star-Studded Cast

Detail	Information
Director	Werner Herzog
Lead Roles	Kate Mara, Rooney Mara
Supporting Cast	Orlando Bloom, Domhnall Gleeson
Filming Locations	Dublin, Naas (Ireland), Slovenia

The film brings together an impressive ensemble. Orlando Bloom and Domhnall Gleeson anchor the supporting cast, playing figures central to the twins’ emotional world. Principal photography took place across Dublin’s Pigeon House film studios and the charming town of Naas, with additional scenes filmed in Slovenia.

“We didn’t want it to end. The experience was unlike anything else that I have ever, ever had.”

— Kate Mara, On Working with Sister Rooney

The Incredible True Story Behind the Screenplay

Bucking Fastard draws inspiration from the true story of Freda and Greta Chaplin, identical twin sisters from England. The twins became a shocking news story in the 1980s when they found themselves at the center of a legal battle. A restraining order was issued against them as a result of their involvement with the same man. The film’s unusual title comes from a synchronized verbal slip the sisters made during court proceedings.

By adapting this fascinating and unsettling real-life account, Herzog creates a meditation on obsession, codependency, and the limits of human connection. Kate and Rooney’s portrayal of the Holbrooke twins brings psychological depth to characters torn between individual identity and symbiotic merger.

After Decades in Separate Careers, Sisters Finally Reunite on Camera

Kate and Rooney have built successful but largely separate acting careers. Kate gained prominence through “House of Cards,” where she played ambitious journalist Zoe Barnes opposite Kevin Spacey. Rooney earned acclaim in “The Social Network” and “The Girl with the Dragon Tattoo,” playing complex, intriguing characters.

Working together on “Bucking Fastard” brought the sisters emotionally closer. “We didn’t want it to end,” Kate emphasized. She reflected on their shared joy and the deepened bond forged through their parallel creative journey in the entertainment industry. This collaboration represents a culmination of years spent supporting each other from afar in their individual pursuits.

What Does This Groundbreaking Sister Project Signal for Hollywood’s Future?

Kate Mara and Rooney Mara’s collaboration challenges conventional filmmaking. When real-life siblings carry leading roles, audiences connect to an authenticity that transcends traditional acting. Their natural chemistry may unlock new creative possibilities in casting and storytelling.

Will this historic pairing inspire other famous siblings to seek bold projects together? Herzog’s vision brings real-life connection to fictional characters, creating an unexpected resonance. The film releases during a moment when audiences crave intimate, character-driven narratives that explore complex family dynamics over spectacle.

Sources

• PEOPLE Magazine – Exclusive interview with Kate Mara about her first film with sister Rooney, March 14, 2026
• IMDb – Bucking Fastard film details, cast information, and production notes
• Deadline – Werner Herzog announces Bucking Fastard cast and production timeline