Sydney Sweeney's Jaw Dropping Transformation In 'Christy', Hid Her Blonde Locks, Gained 30 Pounds

The trailer of Christy was released on September 11, 2025, and actress, Sydney Sweeney would be playing the titular role of the iconic boxer, Christy Martin, on screen. Christy was the first boxer to be voted into the International Boxing Hall of Fame in 2020. The film will showcase Christy’s journey from a small-town fighter to a legendary boxer.

Sydney Sweeney’s jaw-dropping transformation for her role in 'Christy'

As soon as Sydney dropped the teaser of the film on her Instagram handle, people were shocked to see the never-before-seen look of the gorgeous actress. Sweeney underwent a jaw-dropping transformation, gaining 30 pounds to play the pivotal character. She took months of rigorous workouts and high-protein meals to achieve the feet.

Speaking to Variety, Sydney revealed that she felt stronger after undergoing the transformation and credited her trainers for the same. In her words:

“And I really enjoyed being able to train and work with incredible boxing coaches, weight trainers, and nutritionists that helped me get to the place that I was for Christy. But it was incredible being able to completely embody such a powerful woman. I felt even stronger. It was truly inspiring.”

Sydney Sweeney changed her diet for 'Christy'

Not just the workout, but Sweeny also underwent a major diet change. The actress increased her calorie intake by consuming a high amount of protein shakes and supplements. Elaborating on her changed diet, she said

“I had a nutritionist work with me as well as a weight trainer and a boxing trainer. We upped my calorie intake, and I started taking a lot of protein shakes and supplements and eating everything. I ate a lot of Smuckers, a lot of PB and J sandwiches, milkshakes, kind of just constantly always eating because we were so active."

Sweeney hid her blond locks with an array of brown wigs and also revealed that she felt honoured to be a part of Christy Martin’s life. Speaking at the panel of the Toronto International Film Festival, Sweeney also stated that she enjoyed the training and workout during the process of gaining 30 pounds.

Who is Christy Martin?

Born on June 12, 1968, in West Virginia, Christy Martin was nicknamed 'The Coal Miner's Daughter' as her father, grandfather and even brother all worked in mining. Christy entered the ring for the first time after she was dared by her friends to participate in the Toughwoman competition in West Virginia. Without any prior experience, Christy won her first fight. This was the beginning of her career.

More about the boxing biopic, 'Christy'

Directed by David Michod, the boxing biopic, Christy debuted at the Toronto International Film Festival. The film also stars Ben Foster as Martin’s ex-husband, James V. Martin, Merritt Wever as Martin’s mom, Joyce Salters, Ethan Embry as Martin’s father, John Salters, Katy O’Brian as Martin’s opponent, Lisa Holewyne, Chad L. Coleman as boxing promoter and a few others.

Are you also amazed by Sydney Sweeney’s transformation for Christy?

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