American Pharoah won the 141st Kentucky Derby Saturday at Churchill Downs in Louisville, Kentucky, marking the 3-year-old colt's fourth straight victory. Jockey Victor Espinosa won his second straight Derby and third of his career.

The Kentucky Derby has long been a showcase for world-class thoroughbreds, but it’s also a headware fashion show, that includes some of the world's most elaborate hats. 

Here's a glimpse at some of the most fashionable hats at Churchill Downs this weekend, along with 141st Kentucky Derby winner American Pharoah. 

roses A view of the roses in the winners circle before the 141st Kentucky Derby at Churchill Downs. Photo: Jamie Rhodes, USA Today Sports

red hat A Kentucky Derby fan displays a hat during morning workouts at Churchill Downs. Photo: Mark Zerof, USA Today Sports

pink hat Lauren Vonlast of St. Louis, Missouri, and Jacquelyn Morten of Louisville, Kentucky, look at a race program before 141st Kentucky Derby at Churchill Downs. Photo: Peter Casey, USA Today Sports

white hat Mercedes Cox buys a mint julep before 141st Kentucky Derby at Churchill Downs. Photo: Jamie Rhodes, USA Today Sports

blue Emily Hicks wears a traditional hat before the 141st Kentucky Oaks at Churchill Downs. Photo: Mark Zerof/USA Today Sports

hat Shimel Hayden reacts to a stakes race before 141st Kentucky Derby at Churchill Downs. Photo: Jamie Rhodes/USA Today Sports

hats Patrons have a drink wearing traditional hats before the 141st Kentucky Oaks at Churchill Downs. Photo: Jamie Rhodes/USA Today Sports

derby People move through the concourse before 141st Kentucky Derby at Churchill Downs. Photo: Jamie Rhodes/USA Today Sports

cowboy hat Patrons dance in the infield before the 141st Kentucky Derby at Churchill Downs. Photo: Jamie Rhodes, USA Today Sports

party Michael Bullock dances in the infield before the 141st Kentucky Derby at Churchill Downs. Photo: Jamie Rhodes, USA Today Sports

dranks Keith Phillips makes a "$1,000 Mint Julep" before 141st Kentucky Derby at Churchill Downs. Photo: Jamie Rhodes, USA Today Sports

drinks A view of mint juleps before the 141st Kentucky Derby at Churchill Downs. Photo: Jamie Rhodes, USA Today Sports

2 American Pharoah No. 18, ridden by Victor Espinoza, races Firing Line No. 10, ridden by Gary Stevens, out of turn 4 during the 141st running of the Kentucky Derby at Churchill Downs on May 2, 2015, in Louisville, Kentucky. Photo: Andy Lyons/Getty Images

1 Jockey Victor Espinoza celebrates as he guides American Pharoah No. 18 after crossing the finish line to win the 141st running of the Kentucky Derby at Churchill Downs on May 2, 2015, in Louisville, Kentucky. Photo: Rob Carr/Getty Images

race Victor Espinoza aboard American Pharoah passes Gary L. Stevens aboard Firing Line during the 141st Kentucky Derby at Churchill Downs. Photo: Brian Spurlock/USA Today Sports

3 Jockey Victor Espinoza celebrates as he guides American Pharoah No. 18 after crossing the finish line to win the 141st running of the Kentucky Derby at Churchill Downs on May 2, 2015, in Louisville, Kentucky. Photo: Rob Carr/Getty Images

blue Victor Espinoza aboard American Pharoah celebrates winning the 141st Kentucky Derby at Churchill Downs. Photo: Jamie Rhodes/USA Today Sports

roses Jockey Victor Espinoza celebrates as he guides American Pharoah No. 18 after crossing the finish line to win the 141st running of the Kentucky Derby at Churchill Downs on May 2, 2015, in Louisville, Kentucky. Photo: Rob Carr/Getty Images