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Sienna Miller the queen of boho-chic joins dapper Kevin Costner at premiere of his $100m new drama Horizon: An American Saga


Kevin Costner and one of his stars, Sienna Miller, put on a glamorous display as they arrived at the premiere of his new Western film Horizon: An American Epic: Chapter 1.

Kevin Costner and one of his stars, Sienna Miller, put on a glamorous display as they arrived at the premiere of his new Western film Horizon: An American Epic: Chapter 1. He was joined at the premiere by several of Horizon's stars, including Sienna Miller, who looked casual yet cool in a lovely white dress. Kevin Costner and one of his stars, Sienna Miller, put on a glamorous display as they arrived at the premiere of his new Western film Horizon: An American Epic: Chapter 1

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