Sydney Sweeney Gains 30 Pounds for Christy Martin Boxing Biopic

Sydney Sweeney underwent a rigorous physical transformation to portray legendary boxer Christy Martin in an upcoming biopic, gaining over 30 pounds and significantly changing her body composition. Her training regimen included weight training twice a day and two hours of kickboxing daily over three and a half months, leading her to move from a size 23 to size 27 in jeans, with notable increases in her bust and butt. Sweeney described feeling incredibly strong and empowered by the process, embracing the demanding preparation required to authentically depict Martin's athleticism and resilience. The biopic, directed by David Michôd, will explore Martin's rise in boxing and her survival of an attempted murder by her husband, highlighting her legacy as a pioneering female boxer and Hall of Famer. Despite the physical changes, Sweeney expressed enthusiasm for the role, noting her lifelong involvement in sports and martial arts that helped her prepare. The film also stars Ben Foster, Merritt Weaver, and others, with no release date yet announced.