Kevin Costner, 69, is dapper as ever at Horizon: An American Saga premiere while costar Sienna Miller is stylish in a white dress as they lead the stars

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.

The 69-year-old director, co-writer and leading man followed up his announcement that he was done with his hit series Yellowstone by turning the attention toward his new multi-part epic.

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