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Sporting a stylish hat (said to bring good luck) has long been a Kentucky Derby┬átradition for women, and the stars came out for the annual horse race on Sunday in toppers that did not disappoint! Ashlee Simpson-Wentz looked ladylike in a Vionnet cloche hat and polka-dot dress alongside dapper hubby Pete Wentz. Other celebrities seen in their Sunday best included Diane Lane, Rebecca Romijn and Jerry O’Connell. Click on to see more stars in their fabulous Kentucky Derby ensembles.