Sydney Sweeney opens up about dramatic change for biopic

Sydney Sweeney is getting candid regarding her major body transformation for playing the role of boxer Christy Martin in her forthcoming movie.

During a conversation with W magazine, the 27-year-old shared with the outlet about intentionally gaining pounds in order to fit the role.

The American actress revealed to the source, stating, “I came onboard to play Christy, and I had about three and a half months of training.”

Furthermore, the Euphoria actress mentioned that she followed intense weight training workouts for one hour everyday, followed by kickboxing in the middle of the day for approximately two hours and then again weight training at night for one hour.

As a result, the Madame Web star gained over thirty pounds which made her body "completely different."

The Everything Sucks! famed actress also added, “I didn’t fit in any of my clothes. I’m usually a size 23 in jeans, and I was wearing a size 27.”

Interestingly, Sydney was thrilled about her role, noting that she enjoyed the process of transforming herself for fitting herself into the character.

Who is Sydney Sweeney's ex?

Sydney Sweeney ended her engagement with former boyfriend Jonathan Davino, whom she dated for seven years.

RELATED: Sydney Sweeney shines solo in NYC post breakup glam