From a fashion-insider POV, Fall 2026 runway shows inspired Serena Williams to sample the cobalt blue color trend on August 27. But bear in mind that the tennis legend has been practicing for the 2026 US Open all week—on cobalt-colored courts. Perhaps the electric shade was Williams's way of representing tennis-core at a pre-US Open pickleball tournament.
One week before her first doubles match with her sister, Venus Williams, Serena traded her racquet for a paddle at New York City's ninth annual Palace Invitational. The athlete—with six US Open trophies to her name—didn't just win the tournament: Her look was the clear champion, too.
