Celebrities At Kentucky Derby: Lauren Conrad, Armie Hammer

Stars Celebrate the Kentucky Derby!

Stars Celebrate the Kentucky Derby!

The 139th Kentucky Derby rolled into Louisville, Kentucky, today, bringing with it all the hats, horses, and mint juleps that mark the annual event. Stars got a head start on celebrating last night at parties all over town, and the fun continued today as famous faces and fans watched in the stands. Lauren Conrad, who flew in on Thursday, brought a neutral look and lavish topper to bet on the horses, while Armie Hammer and his wife were dressed to the nines as well. Krysten Ritter and Jennifer Tilly chose over-the-top hats for their day at the races, and model Coco Rocha met up with Steffi Graf for a special event yesterday. There were plenty more stars to see, so click through now!

Source: Getty
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