Naomi Osaka stepped up to the service line in a custom Nike and Robert Wun tennis kit for her first round match at the 2026 Australian Open on Tuesday in Melbourne, Australia. The four-time grand slam champion defeated Antonia Ružić of Croatia in a three-set battle.
Osaka turned to her longtime partner Nike for this sea-inspired look, with nods to a previous Australian Open showing. The athlete’s tennis kit consisted of a turquoise tie-dye and green racerback tennis dress. Osaka’s grand entrance for her first round also featured dramatic elements, including a white, wide-brim hat with a sheer veil.
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Tiered palazzo pants featured beneath the hemline of her turquoise tennis dress, with pleating throughout. Osaka also carried a white umbrella with varying panel proportions. During her on-court warm-ups, Osaka donned a zip-up jacket with organic, wavy tendrils hanging from the sleeves.
Though the entire look evoked a jellyfish, small white butterflies could also be glimpsed on the athlete’s apparel and accessories — a reference to Osaka’s 2021 Australian Open tennis match when the athlete moved a butterfly that landed on her face off the court.
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Osaka spoke about her look following her victory over Ružić, giving couturier Robert Wun a nod for the design and revealing she too contributed to her 2026 Australian Open tennis kit. “Nike let me design this one, it’s modeled after a jellyfish. I’m so grateful that I get to do the things that I love,” Osaka said during the interview. “It’s really beautiful, and shoutout to Robert Wun for doing this for me.”
The grand slam champion signed with Nike in 2019 and has since developed a close relationship with the brand when it comes to the design of her on-court looks. At the 2025 U.S. Open, Osaka followed a flower theme, wearing a custom red rose tennis kit with a bubble hem skirt and sparkly, sequin-encrusted top.
Naomi Osaka
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Among her four grand slam titles, Osaka has won the Australian Open in both 2019 and 2021. The athlete, who welcomed her daughter in July 2023, returned to the sport in January 2024 with a fresh perspective on the game, explaining her newfound attitude to WWD in August 2024.
“Things I used to take for granted when I was younger, I can’t afford to do that now,” Osaka told WWD. “It’s incredible how much work goes into being a tennis player. Maybe I didn’t know that before. But now I’m definitely realizing it.”
The 2026 Australian Open kicked off its main draw matches on Jan. 17, with finals concluding the grand slam tournament on Feb. 1. Returning men’s and women’s singles champions Madison Keys of the United States and Jannik Sinner of Italy will compete to defend their titles, with stars like Coco Gauff, Frances Tiafoe, Carlos Alcaraz and Aryna Sabalenka in pursuit of the trophies.