Kelly Reilly is definitely one of a kind — and so is Beth Dutton, whom she played for years on "Yellowstone" and will soon portray on a spin-off series centered around her character. But there's something about Beth that made her even more distinctive — her accent. While appearing on The Drew Barrymore Show , Reilly confessed that she got her character's accent down pat by listening to "Yellowstone" star Kevin Costner speak.

Admittedly, the tone Reilly uses as Beth isn't pure Costner. She added that Beth's smoking — a character trait that she can't stand – encourages her to use a certain register, as does Beth's fondness for booze. "She's educated, she's from a very very wealthy branch of the family," Reilly said. "For Beth it was more about the voice ... I kind of listened to Kevin a lot

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