For context, Sydney is starring as Christy Martin — the American fighter known for putting women’s boxing on the map in the mid ‘90s — in a biopic due to release later this year. Speaking to W Magazine for a brand new cover, it was revealed that Sydney gained over 30 pounds to play the part.

Sydney Sweeney is sharing the 'crazy' 30-pound body transformation she had to play female boxer Christy Martin in a new biopic releasing this year.

Sydney Sweeney underwent a major body transformation after taking on the role of boxing legend Christy Martin in an upcoming biopic. The Euphoria actress, 27, revealed she gained more than 30lbs, and while she "loved" the challenge, she admitted her body looked "completely different" as a result.