BBC commentator Kat Downes described the moment as "the arrival of the fashion queen of Wimbledon," noting the Japanese inspiration.
Molik added observations on the silhouette, highlighting the layers and billowing sleeves.
Osaka addressed the curiosity around her wardrobe, saying she views the all-white rule as an opportunity.
"I've never really even thought of it like it's something that hinders me," she said. "But I'm happy to know you think it's a fashion show."
The dress's rapid sellout amazed Osaka, who posted on Threads: "You guys selling out my Wimby dress before I even had the opportunity to wear it on court is really gagging me.
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Okay fashionistas, I see you!"
