For her first round match -- and subsequent win -- against Germany's Tatjana Maria on Monday, the 37-year-old tennis pro opted for a green bodysuit, which she paired with an unusual accessory -- fishnet tights.
"I knew that I'd been working really, really hard in the offseason to be incredibly fit and incredibly ready," she said of bouncing back after giving birth to her 1-year-old daughter, Olympia. "... Nike always wants to make an incredibly strong, powerful statement for moms that are trying to get back in to get fit, so that was basically it for me."
Fans were immediately taken with the look, with many expressing their excitement over Williams' fashion statement on Twitter.
"Style on point and technique event pointier. That's why she's a #BOSS," one user wrote.