Were she not Sydney Sweeney and prone to making headlines for nearly every move she makes onscreen and off, viewers might not immediately realize it’s the Euphoria actress who’s portraying groundbreaking former professional boxer Christy Salters Martin when watching the sports biopic Christy.

“When I looked in the mirror for the first time, I was like, ‘Whoa.’ I didn’t even recognize myself,” says Sweeney, who gained 35 pounds, wore brown contact lenses and a variety of late-’80s and early-’90s mullet-style brunette wigs, and trained with a dialect coach to imitate the real-life athlete’s thick West Virginia accent for the role. “As an actor, I dream of being able to have roles like that where I get to lose myself completely, and I was able to do that with Christy .”

Were she no

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