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« Horizon » star Sienna Miller’s shocking phone call with Kevin Costner began her latest career journey.
Miller, previously known for « American Sniper, » revealed how she became a part of Costner’s passion project, « Horizon: An American Saga, » in an interview with Fox News Digital.
« Well, I got a call. Be still my ’90s heart, » Miller, 42, revealed. « It said Kevin Costner would like to speak to you about a project that he’s doing. I then got four scripts, so I was like, it must be TV. It wasn’t. It’s for movies. And then there’s Kevin Costner on the Zoom, and I was beside myself. Anyway, we had a wonderful conversation. We got along very well. And at the end of it, he said, ‘Sienna, I have one question for you.’ And I said, ‘Yes, Kevin.’ And he went, ‘Will you go West with me?’ I died, I died. »
« I was like, ‘Yes, yes, I will go. I will go to the moon and back a million times,’ » she recalled.
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![Kevin Costner and Sienna Miller at Cannes](https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2024/06/1200/675/Kevin_Costner_Sienna_Miller.jpg?ve=1&tl=1)
Sienna Miller recalled the moment Kevin Costner offered her a role in « Horizon » in an interview with Fox News Digital. (Getty Images)
Miller admitted she’d been a fan of Costner’s since « Dances with Wolves » and even named two of her pet rabbits after characters in the movie.
« I had Cleopatra, Thumper, Badger, Two Socks and Cisco, » she told Fox News Digital, naming one after the wolf and another after the horse from the film.
« I was a huge fan of that movie, » Miller added. « It broke my heart and [I] was very obsessed with Kevin from that moment forth. »
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Miller’s co-star Sam Worthington, known for his role in « Avatar, » explained what attracted him to Costner’s project.
« I just like working with directors that take risks and are trying to challenge themselves in storytelling, » Worthington, 47, told Fox News Digital. « That’s what we do on ‘Avatar.’ And with this, it’s a more traditional way of filmmaking. But at the same time, he’s not telling a plot-driven story. »
« He’s taken an almost like a novelistic approach to the journey of these characters – to this central character, which is the town of Horizon. And I thought that was a very unique way of approaching. »
![Sam Worthington is joined by his wife at the Horizon premiere](https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2024/06/1200/675/Sam-Worthington.jpg?ve=1&tl=1)
Sam Worthington, photographed with wife Lara Worthington, was drawn to « Horizon » because Kevin Costner was trying to « challenge » himself with storytelling. (Getty Images)
« I just like working with directors that take risks and are trying to challenge themselves in storytelling. »
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While all four parts of « Horizon » will showcase the West before and after the American Civil War, Costner’s storytelling reveals a bigger picture regarding the modern state of the country.
« I think that Kevin is telling a story that shows that there was a lot of hope in how America was formed, » Worthington explained to Fox News Digital. « And therefore, if [there’s] this hope in the formation of America, then maybe there’s hope in the continuation of America – whether it’s a Western or science fiction. »
« Good movies explain to us how we are now, » he added. « And so, if that’s his message, I think that’s a great message for the America that we’re in. »
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« I think that Kevin is telling a story that shows that there was a lot of hope in how America was formed. »
Costner cemented his title as a great boss with the production of his Western.
Miller was pregnant while filming the second installment of « Horizon, » which is set to hit theaters on Aug. 16. The first film, « Horizon: American Saga, » will hit theaters seven weeks earlier on June 28.
« Kevin’s so sweet, » she admitted. « I told him I hadn’t told many people, so he was constantly bringing me little snacks and drinks. I just needed to eat all the time. If I was eating, I was fine. But you know, a few nauseous moments behind tents. »
![Sienna Miller and Kevin Costner pose at the Horizon premiere](https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2024/06/1200/675/Sienna_Miller_Kevin_Costner.jpg?ve=1&tl=1)
Sienna Miller shared how Kevin Costner supported her while the actress was pregnant filming « Horizon: An American Saga – Chapter 2. » (Getty Images)
For Worthington, filming was an opportunity to learn from everybody on set with a cast brought together by Costner.
« I think everybody’s there for the right reasons to try and help him tell his story correctly, » he told Fox News Digital. « So, you’re learning kind of how they help each other to do the best for the boss. »
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Miller stars as Frances Kittredge and Worthington as Trent Gephart in the four-part Western saga. The two are joined by Luke Wilson, Abbey Lee, Jena Malone and Giovanni Ribisi.
« Horizon » also stars Costner, who wrote and directed the four films.
The 69-year-old actor backed the saga with his own money after deeming it a passion project nearly 30 years ago.
![Actor Kevin Costner shoots a gun in country western drama.](https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2024/06/1200/675/kevin-costner-gun.jpg?ve=1&tl=1)
Kevin Costner spent decades creating « Horizon: An American Saga. » (Warner Bros.)
![Kevin Costner in a cowboy hat rides a horse in the trailer for Horizon](https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2024/02/1200/675/kevin-costner-horizon-trailer.jpg?ve=1&tl=1)
Kevin Costner not only starred in but also directed his film « Horizon. » (Warner Bros.)
« I know they say I’ve got $20 million of my own money in this movie, » he previously told GQ magazine. « It’s not true. I’ve got now about $38 million in the film. That’s the truth. That’s the real number. »
As the first « Horizon » film is set to hit theaters, Costner has officially turned his attention solely onto the saga – leaving his « Yellowstone » character John Dutton behind.
Costner explained he left « because there’s just too many questions about it. »
« So the time to step away was now, » he told Fox News Digital.
Through his deal with FOX Nation, Costner is set to release a new project in 2025 for the platform and previously hosted « Yellowstone: One Fifty, » a series that explores the origins of the national park.
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