But it wasn't the bright hue of the dress that caused a stir among spectators. The flesh-toned undershorts Venus Williams wore had some Internet fans questioning whether the 30-year-old tennis star was "going commando." Williams explained on her Twitter account that she was, in fact, appropriately covered up. "I am wearing undershorts the same color as my skin, so it gives the slits in my dress the full effect!" she wrote.
Photos: Venus Williams' U.S. Open Outfit
Photos: Venus Williams' Racy French Open Outfit
Credit: Lucas Dawson/Getty Images