Credit: Stephen Lovekin/WireImage; Michael Loccisano/Getty; Michael Loccisano/Getty Images

Steady rain didn't stop Orb, the favorite horse, from winning the 139th Kentucky Derby on Saturday, nor did it keep the stars from showing up on the red carpet in their finest southern belle ensembles. Lauren Conrad, Miranda Lambert, and Coco Rocha are just a few of the celebs we are tipping our hats to this year for their inspired headpieces; click the photo to see their looks, plus our favorite star-studded Kentucky Derby hats from years' past.

— Jennifer Merritt