Serena Willians, Maria Sharapova
Credit: Michael Heiman/Getty Images ; Chris Trotman/Getty Images

We're three days into the US Open, and our favorite tennis pros have been bringing their style A-game! Serena Williams made it to round three of the tournament in a red version of the cobalt Nike dress she played in earlier this week. Click through the gallery for style moments from the Williams sisters, Maria Sharapova, and more!