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Kevin Costner Has Nothing But Love for ‘Horizon’ Costar Sienna Miller: ‘She Was at the Top of His List’

Kevin Costner has nothing but love for his Horizon costar Sienna Miller and a source exclusively tells Life & Style she was ‘at the top of his casting list.’

“Sienna has never had a role as juicy as the one she has in Horizon where she gets to play the full range of emotions, from romantic to tragic, and gets to show off her awesome ability to pull off a convincing historical American accent, which is something she has worked hard at for twenty years,” the insider says. In a flamboyant fresco where multiple destinies intertwine, dreams and hopes face obstacles and cruelty to offer a cinematic spectacle of exceptional scope and emotional depth.” Samir Hussein / Getty ImagesBoth Sienna and Kevin, 60, attended the 2024 Cannes Film Festival as the Field of Dreams star debuted Horizon: An American Saga for the first time.

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