Kevin Costner and Son Hayes.Photo:Warner Bros/Youtube

KEVIN costner and son Hayes star in film Horizon

Warner Bros/Youtube

Kevin Costneris beaming with pride over his sonHayes' big-screen debut.

The 15-year-old appears in his dad’s upcoming two-part WesternHorizon: An American Saga, and can be seen in the recently released trailer which Costner, 69, shared a snippet of on Sunday.

“When it’s your movie you get to pick who you hang out with 👍🏻,” read thecaption on the post, which was shared to the Kevin Costner & Modern West Instagram account. “Really proud of my son, Hayes, for making his acting debut in#HorizonAmericanSaga.”

“And thanks to all of you for the love you’ve shown our trailer this week,” Costner’s caption continued. “I couldn’t be more excited to share this with you.”

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“It’s all right — I’m gonna be with Dad,” he tells Miller’s horrified character, before closing the door on their hiding spot.

Costner — who co-wrote, directed and stars inHorizon— told PEOPLE in November 2022 that Hayes, who was 13 at the time, is “very good” in the film.

“Hayesplays the namesake characterthat I actually play in the movie. He’s 13 years old and the screenplay’s been around longer than that,” said the two-timeAcademy Awardwinner.

“I kind of did it on purpose, so he could be hanging out with me,” Costner added at the time. “I’m like any other parent — I’m trying to figure out, like, ‘This is really neat. You should come be with me.’ "

Kevin Costner on the poster forHorizon: An American Saga(2024).Warner Bros. Pictures

HORIZON: AN AMERICAN SAGA: CHAPTER 1

Warner Bros. Pictures

Per a synopsis,Horizon"explores the lure of the Old West and how it was won — and lost — through the blood, sweat and tears of many.”

“Spanning the four years of theCivil War, from 1861 to 1865, Costner’s ambitious cinematic adventure will take audiences on an emotional journey across a country at war with itself, experienced through the lens of families, friends and foes all attempting to discover what it truly means to be the United States of America,” the synopsis adds.

Aside from Costner, Hayes and Miller, 42,Horizon’scast also includesSam Worthington,Jena Malone, Abbey Lee,Michael Rooker, Danny Huston,Luke Wilson,Isabelle Fuhrman,Jeff Fahey,Will Patton, Tatanka Means, Owen Crow Shoe, Ella Hunt andJamie Campbell Bower.

Hayes isthe middle childof Costner and ex-wifeChristine Baumgartner, who also share son Cayden, 16, and daughter Grace, 13. Additionally, theDances with Wolvesactor is dad to daughters Annie and Lily, and sons Joe and Liam from previous relationships.

source: people.com