Sydney Sweeney Debuts Drastic Transformation at London Premiere of Boxing Biopic Christy

At the 2025 BFI London Film Festival, Sydney Sweeney premiered her new film "Christy," a boxing biopic where she portrays Christy Martin, a renowned female boxer. Sweeney's appearance drew significant attention, as she wore a pale pink Alexander McQueen corseted gown with lace and sequin details, highlighting her petite frame and toned figure, a result of gaining 30 pounds of muscle for the role. The film, which debuted to critical acclaim at the Toronto International Film Festival, explores Christy Martin's life, including her rise to fame and her survival of an attempted murder by her husband. Sweeney shared that the role was physically and emotionally intense, involving rigorous training and a major physical transformation. Her brother, Trent Sweeney, accompanied her at the premiere, receiving praise for his stylish yet understated outfit, complementing Sydney's look. While Sydney's pink gown was praised for its elegance, some fashion critics noted the actress's recurring choice of lingerie-inspired gowns as a style concern, contrasting with her powerful on-screen transformation and dedication to the role.