Race goers watch as jockey Colm O'Donoghue rides Revolving through the paddock before the third race at the 138th Kentucky Derby horse race at Churchill Downs, Saturday, May 5, 2012, in Louisville, Ky. The Run for the Roses draws them to Churchill Downs. But what race goers wear is as much a spectacle in itself. (AP Photo/Mark Humphrey)
Madhatters and horse-racing fans converged at the 138th Kentucky Horse Derby on Saturday, May 5.