No look at The Kentucky Derby is complete without a hat. That was evident from this weekend's festive celebrity looks from Lauren Conrad, Krysten Ritter, and Coco Rocha, who finished their ladylike ensembles with coordinating headwear. Coco Rocha made an entrance in sophisticated skirt suiting — but it was the dramatic orchid-adorned headpiece that really turned heads. Krysten Ritter dressed up her floral-print dress and Bionda Castana heels with a floppy ribbon-trimmed hat, and Lauren Conrad paired a soft nude polka-dot sheath dress with a nude floral-adorned fascinator. That's the rundown on who wore what — now, take in the hat-topped looks below and cast your vote for the Derby's best dressed.