"That’s so hard af" - Fans react as Sydney Sweeney shows off biceps in new behind-the-scenes photos from Christy Martin biopic

Sydney Sweeney's incredible physique for her upcoming Christy Martin biopic has everyone talking. Some commended Sweeney for her effort to prepare for the role, while others voiced appreciation for her portrayal of the legendary boxer.

Sweeney, who will play Martin in her upcoming biopic, recently posted pictures of her new appearance on social media. The 27-year-old who wore training clothes from the 1990s flaunted her triceps and biceps. Complex Pop Culture took to X and shared Sweeney's new look.

Fans soon rushed to the comments section to share their reactions.

One fan praised her look, writing:

''That’s so hard af. I love that for her. I know she feels the difference in power. I hope she keeps the muscle''

Another expressed their excitement, writing:

''Wow.. Must be something big.. Sydney Sweeney, in a non glamorous character and that too of a real-life boxer, is really something worth waiting for.''

Other fans wrote:

''Wow, Sydney Sweeney looks incredible as Christy Martin! I can't wait to see this biopic. David Michôd is a great director.''

''Love seeing the behind-the-scenes moments! Sydney Sweeney is bringing this character to life''

Check out more reactions below:

Screenshots courtesy of Complex Pop Culture's post on X

The movie, which does not yet have an official title, will be directed by Australian filmmaker David Michod. It will follow the true story of Martin, covering both her personal and private life.

Martin was a prominent female boxer figure in the 1990s. According to Boxing Rec, her professional career spanned from 1989 to 2012. The 56-year-old amassed 49 wins, out of which 32 came via knockouts.

In addition to being the first female boxer to be inducted into the Nevada Boxing Hall of Fame in 2016, she was the 2009 WBC female super welterweight champion.

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Sydney Sweeney discusses playing Christy Martin

Sydney Sweeney will portray former professional boxer Christy Martin, also known as 'The Female Rocky,' in her new film.

In an interview with Deadline, Sweeney expressed her thoughts on Playing Martin. The Euphoria star also disclosed her prior combat sports experience, stating:

"I grappled and did kickboxing from 12-19 years old. I’ve been itching to get back into the ring, train, and transform my body. Christy’s story isn’t a light one, it’s physically and emotionally demanding, there’s a lot of weight to carry. Christy Martin not only legitimized female boxing, she overcame gender stereotypes, and fought through emotional, physical, and financial abuse...I feel compelled to tell a story about a woman who faced so much adversity and didn’t allow it to defeat her. It’s powerful, and emotional.”