The designer behind Naomi Osaka's custom Labubus for the US Open 2025 is Kerin Rose Gold from New York. She's an artist known for creating sparkly, hand-decorated pieces. The 42-year-old made each of Osaka's dolls by hand, adding rhinestones. Gold is also the founder of the brand A-Morir and has worked with stars like Rihanna, Lady Gaga, and Britney Spears.