She's a buff and brunette boxing star, it's... Sydney Sweeney? Well, with her recently revealed makeover, you best believe it! Ding ding...
Just short of 24 hours ago, the Euphoria actor shared a two-part carousel post on Instagram to reveal a physical transformation. The new look comes ahead of her role as the legendary boxer, Christy Martin in her upcoming biopic.
"well the cats out of the bag thanks to some paps in bushes so here’s a little bts from my film im working on right now. over the past few months, i’ve been immersed in training to bring to life the story of an incredible woman—a true champion who fought battles both inside and outside the ring. her journey is a testament to resilience, strength, and hope, and I’m honored to step into her shoes to share her powerful story with you all. more to come soon :) CHRISTY MARTIN," Sydney wrote to caption the images.
As the star herself shows, Sydney has undergone a dramatic transformation, switching out her trademark long blonde locks for a curly brunette pony, complete with a fringe. Talk about unrecognisable?! And not only that but she has also, clearly, already taken to the ring to train, flashing her muscular bicep. G'won, girl!
We look forward to seeing how the film and Sydney will bring light to such a legendary female athlete.
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Lia Mappoura (she/her) is the Beauty Writer at Cosmopolitan UK, with over four years of experience reporting across the brand's print, social, video and digital platforms. Lia covers everything from emerging trend analysis to viral celebrity hair and makeup moments, making her an expert at spotting the season’s next big beauty look (before it takes over social media feeds).
In 2025, she was named The Rising Media Star at the Love Perfume Awards with The Perfume Shop, recognised for her outstanding digital fragrance content and for building genuine authority within the space. She is passionate about challenging outdated beauty stereotypes, championing inclusive representation in beauty, and educating readers on the trends, products and conversations shaping the industry today. Follow her on Instagram or find her on LinkedIn.
