Michael Heiman/Getty Images ; Chris Trotman/Getty Images
Caitlin Petreycik
Sep 01, 2011 @ 6:30 pm

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!

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