Ukrainian tennis sensation Marta Kostyuk is making waves both on and off the court this season. After a remarkable run to the semifinals at the 2026 French Open, the 23-year-old took a moment to soak in the Parisian sun and share a stunning swimsuit photo that had her fans doing double takes.

Kostyuk posted the picture on her Instagram, captioning it with a simple heart emoji. The image showed her relaxing by a pool, wearing a chic black bikini that highlighted her athletic physique. The post quickly racked up thousands of likes and comments, with fans praising her confidence and beauty. "You're incredible both on and off the court," one follower wrote. Another simply said, "Woahhhh ! Martaaaa."

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But Kostyuk's journey in Paris was about much more than just a photo op. She entered Roland Garros as the No. 7 seed and delivered a series of stunning upsets, including a victory over world No. 1 Iga Swiatek and a hard-fought win against compatriot Elina Svitolina. Her run ended in the semifinals against eventual champion Mirra Andreeva, but Kostyuk's performance cemented her as a rising force in women's tennis.

In a heartfelt statement after the tournament, Kostyuk reflected on her growth. "A few years ago, reaching my first Grand Slam semi-final and not making the final would have felt very different. Of course, I'm disappointed. I wanted more. But I'm also leaving Paris with a feeling I haven't always had: appreciation for what this journey is becoming," she said. "For a long time, I measured everything through results. Lately, I've been learning to appreciate the growth behind them, the people who share this path with me, and the opportunity to compete at the highest level."

Her 2026 season has been nothing short of spectacular. Prior to the French Open, Kostyuk won the WTA 250 title in Rouen and followed it up with her first WTA 1000 crown in Madrid. Those victories helped her climb to No. 7 in the live WTA Finals rankings, putting her in prime position for a top-eight finish by year's end.

Kostyuk's success on clay has been a highlight, but she's now turning her attention to grass courts. With Wimbledon on the horizon, she's aiming to carry her momentum forward. "I feel like I'm playing with more freedom and joy this year," she said in a recent interview. "The work I've put in with my team is paying off, and I'm excited for what's next."

Fans are already speculating about her potential at the All England Club, where she'll look to improve on her previous best of reaching the third round. If her recent form is any indication, a deep run could be in the cards.

Kostyuk's swimsuit snapshot is just the latest example of how she's embracing her off-court life while staying focused on her goals. It's a balance that seems to be working—both in terms of her game and her connection with fans. For more on tennis stars enjoying their downtime, check out Caroline Wozniacki's iconic body paint photoshoot that still turns heads.

As the grass-court season approaches, all eyes will be on Kostyuk to see if she can continue her rise. One thing is certain: whether she's dominating on the court or relaxing off it, she's doing it with style and grace.