A new image teases Sydney Sweeney’s striking transformation in the highly anticipated Christy Martin biopic. Sydney Sweeney is stepping into the ring and into one of the most transformative performances of her career.

The first glimpse of the film sees Sweeney — known for her long blonde hair — in the ring as the boxer. Her transformation finds her with Martin's classic dark curly locks and toned arms. Sweeney sported a white tank, long shorts with tassels, a mouthguard and red boxing gloves in the photo.

See a new photo of "Euphoria" star Sydney Sweeney looking unrecognizable as boxer Christy Martin in an upcoming biopic.