Audrina and Stephanie Know Their Girls, Cars and Boys

Audrina Patridge wore a "Know Your Girls" shirt in honor of Breast Cancer Awareness Month yesterday before changing into a hot cobalt blue number for a Pepsi 500 event. She mingled with Dale Earnhardt Jr. and a few other racecar drivers and then met up with Stephanie Pratt, also in the color of the evening, at Wonderland for Heidi Montag's birthday party. The girls are still in the midst of Kristin drama on The Hills but with Audrina leaving for her own show and Stephanie saying this could be her last season, they may not be onscreen together much longer.

To see more photos of Stephanie with a male friend and Audrina at the racing party with Balthazar Getty just


Images include: Audrina Patridge, Stephanie Pratt, Melissa Joan Hart, Brittny Gastineau, Jeff Gordon, Dale Earnhardt Jr, Scott Speedman, Balthazar Getty, LaLa Vazquez

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