Sydney Sweeney is opening up about her dramatic transformation to portray legendary boxer Christy Martin in an upcoming biopic. In a new interview with W Magazine published Monday, the actress revealed she spent months training for the role, gaining 30 pounds and going up four pant sizes in the process.

Glen Powell and Sydney Sweeney promoted their high-profile romantic comedy, 2023’s Anyone but You. The press tour ultimately received a considerable amount of attention due to the pair’s flirtatious interactions in public.