Article Summary: Naomi Osaka's US Open outfit turned her first-round walk-on into the most talked-about entrance of the tournament. Law Roach styled it, Who Decides War built it in roughly 30 hours, and Allen Iverson inspired every detail. Here is how the look came together, and what it references.
By Runway Magazine Editorial Team
The gown took roughly 30 hours to build. It carries an entire career stitched into the fabric. Naomi Osaka then walked it onto Arthur Ashe Stadium and won the match in it.
Naomi Osaka’s US Open outfit for her first-round match on August 31, 2026, was a custom Who Decides War walk-on look styled by Law Roach. Built in roughly 30 hours, the hooded French terry gown honored Allen Iverson and carried newspaper clippings from Osaka’s own career.
What Is Naomi Osaka Wearing at the US Open?
Osaka opened her tournament in a deliberately two-part look. Above, a sleeveless hooded gown in heavyweight grey French terry, cut oversized and finished with a court-length train. Below, a domed white tulle skirt built from several yards of fabric.
Underneath sat the Naomi Osaka Nike kit, cut in black and threaded with basketball references throughout. She wore black pumps for the photographs beforehand, then swapped into Nike sneakers for play.
The timing explains the concept. Nike built basketball cues into its US Open collection this season, and Osaka took the brief literally. The same tournament also produced another family-style Nike moment when Naomi Osaka’s mom debuted Swarovski-covered Nike sneakers at the US Open. Nike’s tournament visibility extended further when Carlos Alcaraz debuted Travis Scott’s unreleased Nikes at the U.S. Open. Marie Claire’s look-by-look breakdown tracks every component, down to the shoe change.
The Iverson References, Head to Toe
Once the hood came off, the tribute read immediately. Osaka wore cornrows beneath an athletic headband. Additionally, she paired a black sleeve on one arm with a red-and-black sweatband on the other — precisely the Philadelphia 76ers palette Iverson wore for years.
The Naomi Osaka Allen Iverson outfit therefore worked on two levels at once. Above the waist it read as basketball history. Below it, the tulle read as couture. Few athletes attempt both in a single entrance.
How the Naomi Osaka US Open Outfit Came Together in 30 Hours
The build started with two photographs. Osaka and her stylist sent Who Decides War two images of Iverson in his headband, cropped to the head alone. From there, the label had roughly 30 hours.
That deadline explains the ambition rather than excusing it. Founders Ev Bravado and Téla D’Amore delivered a train that dragged the court, a domed tulle skirt, and a hood panelled in distressed newspaper clippings.
Those clippings are the detail that matters most. They document Osaka’s own career — the titles, the withdrawals, the comebacks — sewn into a garment she then competed in. Thirty hours of work, and a decade of headlines carried on her shoulders.
Osaka has been direct about the origin. “Nike said basketball so I said, okay, you want basketball?” she said afterward, per WWD’s courtside report. Consequently the Naomi Osaka walk-on outfit reads as an answer to a brief, not as a costume.
The Tribute Was Signposted for Days
Osaka had already been laying the groundwork before the tournament began. She arrived at her pre-tournament press conference in a throwback Iverson SLAM magazine tee, worn with a vintage 1997 US Open cap sourced on eBay — the year of her birth. There she called Iverson a trailblazer for changing how athletes dressed.
Then, minutes before walking out, she posted the look to Instagram. The caption ran to two words: “The Answer.” Iverson’s nickname needed no further explanation.
Who Styles Naomi Osaka?
Law Roach styles Naomi Osaka, and this was the first Grand Slam of their partnership. The Naomi Osaka Law Roach collaboration began earlier in 2026, and she called him a creative force when they announced it.
Roach built his reputation on exactly this kind of narrative dressing. His work across Zendaya’s style archive turned red carpets into running references rather than isolated looks. The same instinct applies here. Rather than dress Osaka for a tennis match, he dressed her for a story.
What Is the Who Decides War Brand?
Who Decides War is a New York label built by Bravado and D’Amore around distressed, embroidered and heavily worked construction. Virgil Abloh mentored both founders, and this gown nods to him directly.
The silhouette references the Arc’teryx windbreaker dresses Abloh made for Off-White’s Fall 2020 collection — a divisive piece at the time, and one the founders have named as a favorite. That lineage is why the look belongs alongside designer collections rather than sportswear.
What Comes Next at Flushing Meadows
Osaka faces Katerina Siniakova next, and she leads their head-to-head 2-1. Every round she survives buys another entrance, which is now part of the draw.
She earned this one the hard way. Osaka beat Anastasia Zakharova 7-6(6), 7-6(3) without breaking serve once, striking 11 aces across two tiebreaks. The gown was not the only thing built under pressure that night.
The season already reads as a sequence. Melbourne brought a jellyfish-inspired ensemble in January. Roland Garros brought black and gold. Wimbledon brought a kimono-inspired design, following the tennis dress codes that shape what players can wear there. Consequently the US Open 2026 fashion conversation now runs through one player.
Her second round decides how long that continues. If she advances, another Naomi Osaka US Open outfit follows within 48 hours. Runway Magazine has tracked every walk-on of her season so far.
