Each spring, the Kentucky Derby attracts hundreds of thousands of people to Louisville’s Churchill Downs. And while 20 fierce horses running the track at top speeds is the ultimate adrenaline rush, it’s the fashion that truly makes this race a spectacle.

This year, the annual horse race was rescheduled for the first time since 1875. It was meant to take place on May 1 but has been rescheduled to September 4, 2020.

In the past, everyone from celebrities like Kim Kardashian West and members of the royal family to first-time attendees have geared up in their best hats and spring ensembles. Sporting a headpiece at the event is believed to bring good luck, according to the Kentucky Derby website. And though the tradition was started by women, men have also started wearing more unique hats in recent years.

Insider rounded up the wildest Derby hats that would give even the British royal family a run for their money.

This showstopping white feather hat was spotted on a Kentucky Derby fan in 2004.

Foto: A flashy choice. Source: A. Messerschmidt/Getty Images

The costume piece jazzed up the racing fan's white retro sunglasses.

Jessica Simpson also attended the 2004 race in a candy pink hat.

Foto: Its grand silhouette swooped across the front. Source: Mike Simons/Stringer/Getty Images

The singer and actress looked beach-ready in her oversized accessory.

Two fans tapped into the race's history by wearing rose hats at the 2005 event.

Foto: The rose became the official flower of the race in 1904. Source: A. Messerschmidt/Getty Images

Red roses spilled over the sides of the hat on the left, while they were subtly incorporated to the black cowboy hat on the right.

Another 2005 racegoer honored the Kentucky Derby's official flower.

Foto: She spiced up the texture with a feathery red border. Source: Andy Lyons/Getty Images

Black sunglasses and red lipstick served as the ultimate accessories to the festive hat.

Fake money, horse figurines, and other knickknacks were piled onto a 2006 hat that appears to be the result of some serious DIY skills.

Foto: A simple straw hat rests below all of the layers. Source: Andy Lyons/Getty Images

It nearly sums up the race.

Fruit, wine, and rose details enhance this neon pink felt top hat from the 2006 event.

Foto: It was a luxurious display. Source: Andy Lyons/Getty Images

Surrounding the embellishments was a thick layer of fuzzy white trim.

This baby pink sun hat was a sweet option for the 2007 Kentucky Derby.

Foto: The textured hat featured one flower detail on the side. Source: Andy Lyons/Getty Images

The woman's accessory complemented the light pink polka dots visible on her top.

Queen Elizabeth II graced the 2007 Kentucky Derby with her presence in a lovely mint ensemble.

Foto: Her woven accessory was green beneath the brim. Source: Matthew Stockman/Getty Images

Vibrant watermelon pink fabric wrapped around the top, securing a perfectly knotted bow.

This pure white hat, spotted in 2008, had a strikingly chic silhouette.

Foto: It retained a boxy shape that hung low over the face. Source: Matthew Stockman/Getty Images

Three small feathers were fastened to the side.

Actress Tischina Arnold selected a structured design to wear to the event in 2008.

Foto: Arnold's abstract hat played with shape and dimension. Source: Jeff Gentner/Stringer/Getty Images

She accessorized with drop pearl earrings.

Leave it to Kim Kardashian to channel old Hollywood glamour with her 2009 Kentucky Derby hat.

Foto: The folded gray headpiece gently swept over her hair. Source: Jeff Gentner/Getty Images

She also wore her signature oversized sunglasses.

Actress and producer Lynn Whitfield pulled off a daring blue feathery piece in 2008.

Foto: Whitfield's textured hat provided beautiful contrast to her sleek emerald dress. Source: Jeff Gentner/Stringer/Getty Images

She looked luminous against the bright aquamarine tones.

Sheer checkered fabric is a staple for summer, as demonstrated by a 2010 Kentucky Derby spectator.

Foto: The pattern was subtle. Source: Matthew Stockman/Getty Images

While understated and classic, the transparent fabric over the white hat nearly creates an optical illusion of complex dimension.

Ashlee Simpson's cloche hat stood out among the larger elaborate headpieces at the 2010 races.

Foto: Her thin strand of pearls perfectly suited her flapper-style hat. Source: Jeff Gentner/Stringer/Getty Images

Simpson completed the look with a red and white polka dot dress.

Layers of sheer black fabric were fashioned into a billowing bow for this 2011 race look.

Foto: The white knot served as the focal point. Source: Harry How/Getty Images

An understated color scheme of black and white completed the rest of her outfit.

A 2011 attendee kept the sun off her skin in a massive coppery hat.

Foto: The brown color scheme was a refreshing break in a sea of vibrant hats. Source: Matthew Stockman/Getty Images

A thick gold ribbon served as a clean accent.

An abundance of feathers draped over the brim of Kate Gosselin's wild hat in 2011.

Foto: While the design was elaborate, the colors were neutral. Source: Michael Loccisano/Getty Images

Tan tulle accented the top of her hat.

Here, an eye-catching splash of blue was captured at the 2012 event.

Foto: This look was all about cool tones. Source: Matthew Stockman/Getty Images

Feathers and tulle livened up the striped white sun hat.

Pink flowers and a dense pile of peacock feathers adorned this 2012 headpiece.

Foto: The massive hat nearly functioned as an umbrella. Source: Elsa/Getty Images

This guest also fastened a matching pink flower to the sleeve of her shirt.

This 2012 hat looks like it came straight out of a fashion editorial.

Foto: The petal shape subtly captures the essence of a flower. Source: Elsa/Getty Images

A spring look at its finest.

Embedded within this leafy green top hat from 2013 was an abundance of red roses and miniature horse figurines.

Foto: This piece brought new meaning to a top hat. Source: Jamey Price/Stringer/Getty Images

A traditional black brim was visible beneath the baffling tower.

Supermodel Coco Rocha served a look when she wore an orchid-inspired hat for the 2013 Kentucky Derby.

She even pulled off a lavender lip.

Krysten Ritter wore a regal creme headpiece at the 2013 Kentucky Derby.

Foto: The "Jessica Jones" actress opted for a sun hat with an extra large brim. Source: Michael Loccisano/Getty Images

Robin's egg blue fabric bordered the brim and tied into an large bow at the back.

Feathers sprawled across actress Star Jones' 2013 Kentucky Derby hat.

Foto: The extravagant detail was balanced by the soft gray color. Source: Michael Loccisano/Getty Images

Jones' accessory looked like it was almost floating over her head.

Tiny hats have their place at the races too, like this 2014 example.

Foto: Though small, this hat still packed a punch with its lime green feathers. Source: Andy Lyons/Getty Images

This racegoer paired her colorful hat with equally festive glasses.

Horse-racing champ Tami Purcell wore this hat in 2014.

Foto: The color scheme was dominated by shades of brown, cream, and copper. Source: Dylan Buell/Getty Images

Though covered in springy flowers, the headpiece looked like it was inspired by autumn.

A devoted race fan from 2014 donned a white top hat depicting the venue in action.

Foto: It was an artistic choice. Source: Matthew Stockman/Getty Images

Signature red roses dotted the underside of the brim.

Like many Kentucky Derby goers, Johnny Weir opted to wear an elaborate hat featuring a horse-like figurine for his 2014 appearance.

On his website, Weir explained that his original hat, designed in collaboration with Kerin Rose Gold, was titled "Pegasus" for the mythical figurine featured on his accessory.

Rapper Cheryl James, better known as Salt, took a style cue from Hello Kitty when she wore a large pink bow for the 2014 Kentucky Derby.

Foto: She aced the youthful look. Source: Mike Coppola/Getty Images

By sweeping her hair back into a sleek, sophisticated updo, James put all focus on the headpiece.

Model Lindsay Ellingson attended the 2015 Derby wearing a burgundy fascinator.

Foto: She proved that one doesn't have to wear a full-blown hat to make an impression. Source: Neilson Barnard/Getty Images

Ellingson paired her pretty accessory with a white spring dress.

One 2015 Derby fan was a vision in a unique hat that featured a flamingo sitting inside a basket.

Foto: The front was marked by a red rose and an abundance of cherries. Source: Andy Lyons/Getty Images

Ironically, the flamingo's floral straw hat was more in line with the headpieces traditionally worn to the Kentucky Derby.

Sarah Hyland embraced florals and feathers at the 2015 race.

Foto: The"Modern Family" actress stepped out in a deep red fascinator. Source: Michael Loccisano/Getty Images for Churchill Downs

Two long feathers and delicate netting transformed the crimson accessory into a standout piece.

A woman at the 2015 race wore a sheer white hat that covered most of her face.

Foto: Multiple layers lined the brim of the headpiece. Source: Neilson Barnard/Getty Images

The hat featured a cream center flower and a display of feathers.

This woman took the racing theme quite literally in 2015.

Foto: She secured the "Golden State Horse Show" ribbons to her white hat. Source: Elsa/Getty Images

Each color marked a different prize, such as "fourth place," "third place," and "second place."

Kira Kazantsev, Miss America 2015, rocked a fascinator with cherry red plumage at the 141st Kentucky Derby.

Foto: Black feathers lined the base of her hat. Source: Michael Loccisano/Getty Images for Churchill Downs

She sealed the look with classic red lipstick to match.

Blue and pink made for a whimsical choice at the 2015 Kentucky Derby.

Foto: The cotton candy colors were bright and playful. Source: Neilson Barnard/Getty Images

Layered pearl necklaces completed this racegoer's Southern Belle look.

Robin Meade's 2015 white fascinator hat resembled a crown.

Foto: Swirling ribbons twisted upwards in a sculptural manner. Source: Tasos Katopodis/Stringer/Getty Images for Churchill Downs

She secured the accessory far back on her head.

A sleek horse was the focal point of this hat from 2015.

Foto: Green foliage sprouted from the top of the accessory, resembling a plant. Source: Neilson Barnard/Getty Images

The white hat had a classic silhouette with a thin black stripe.

A cocktail was casually buried within the blanket of red roses covering Johnny Weir's 2015 Derby hat.

Foto: The cocktail likely represented the Derby's traditional drink: a Mint Julep. Source: Neilson Barnard/Getty Images

Weir posed next to Tara Lipinski whose blonde hair was styled into intricate braids.

At the 2016 Kentucky Derby, Clark Davis (Miss Kentucky 2015) paired her sash with an exquisite hat.

Foto: The hat's neutral color palette elevated its sophistication. Source: Gustavo Caballero/Getty Images for Churchill Downs

Flowers stretched out of the accessory's artistic centerpiece.

This voluminous red hat gracefully draped over a woman's face at the 2016 Kentucky Derby.

Foto: The perfect dose of drama. Source: Andy Lyons/Getty Images

She wore a monochromatic look with red lipstick and a red dress.

Flower hats were interpreted differently among the most spirited race attendees, such as this example from the 2016 event.

Foto: It was composed of pink overlapping circles. Source: Mike Coppola/Getty Images for Churchill Downs

The arrangement orbited around a centerpiece of traditional pink flowers.

Roses are a popular hat embellishment from year to year, but one woman took the flower to the extreme in 2016.

Foto: She wore one massive rose as her hat. Source: Logan Riely/Stringer/Getty Images

The sculpted petals were a classic shade of red.

Figure skater Tara Lipinski ditched flowers and pastels for a fierce lacy fascinator in 2016.

Foto: Sparsely placed feathers poked out from the center. Source: Mike Coppola/Getty Images for Churchill Downs

The former Olympian's semi-sheer white dress had mesh paneling and splashes of red throughout.

Actress Cassandra Jean was one of the few to stray from pastel spring colors with her 2016 Kentucky Derby hat.

Foto: Instead, she opted for a rich purple hat. Source: Frazer Harrison/Getty Images for Churchill Downs

Smooth flowers in the same shade of purple seamlessly blended with the fabric of her headwear.

Actress Rachel McCord's inverse hat was a unique take for the 2016 race.

Foto: It wouldn't be complete without having at least one floral accent. Source: Frazer Harrison/Getty Images for Churchill Downs

Clustered in the center of the beige hat was an arrangement of tiny pearls.

Model Kate Upton proved that sometimes less is more.

Foto: While at Churchill Farms in 2016, wore a neutral wide-brimmed hat. Source: Gustavo Caballero/Getty Images for Churchill Downs

In her elegant emerald gown and her minimalistic hat, Upton looked as though she was ready to depart on a glamorous summer holiday.

In 2016, Gayle King hit the red carpet in a soft blue flower hat.

Foto: King's chin-grazing bob looked chic beneath her elegant accessory. Source: Nicholas Hunt/Getty Images

The TV personality and journalist coordinated the piece with the blue tones in her printed dress.

Entrepreneur and producer Courtney Sixx took Derby hats to a new level in 2016.

Foto: She wore a blush fascinator on top of her head. Source: Frazer Harrison/Getty Images for Churchill Downs

A giant flower extended off the side of the hat in an extravagant display of pink and white.

Swedish model Ellen Nordegren secured an ivory fascinator to her gently waved hair for the 2016 Kentucky Derby.

Foto: Nordegren was formerly married to Tiger Woods. Source: Gustavo Caballero/Getty Images for Churchill Downs

The model's choice of hat was embellished by flower petals and a veil.

In 2017, this expansive rose headpiece balanced flat across a woman's head.

Foto: Two green feathers emerged from the center. Source: Nicholas Hunt/Getty Images for Churchill Downs

The thin frame consisted of red roses and white flowers.

Actress Laura Bell Bundy opted for a simple, yet chic red fascinator hat in 2017.

Foto: A black veil draped over the circular hat. Source: Michael Loccisano/Getty Images for Churchill Downs

Her red and black selection served as a striking accent piece to her garden-inspired minidress.

Dimension made this woman's hat a standout look during the 2017 Kentucky Derby.

Foto: The floral theme reappeared. Source: Shaban Athuman/Stringer/Getty Images

Arranged atop a sheer wide-brimmed hat were delicate layers of fabric dyed violet and magenta.

Singer and actor Johnny Gill smiled with a guest who gave off Swan Lake vibes in her gorgeous feathered hat.

Foto: Her sleek updo was reminiscent of a ballerina. Source: Michael Noble Jr./Getty Images

The dramatic headpiece was also decorated with a simple veil.

One does not go to the Kentucky Derby to blend in.

Foto: At the 2017 event, a woman wore electric pink. Source: Michael Noble Jr./Getty Images

The bold color choice was replicated in her shawl, her midi dress, and the wash of color coating her lips.

One Derby-goer wore an exquisite hat that resembled more of a peony perched on the side of her head.

Foto: The floral accent piece had wispy feather strands reaching beyond the flower. Source: Nicholas Hunt/Getty Images for Churchill Downs

Soft salmon tones in the hat coordinated with her bubblegum-pink outfit.

Kentucky Derby Princesses and Queens posed in matching floral dresses and pink wide-brimmed hats.

Foto: Each accessory was varnished with flowers and oversized ribbon. Source: Gustavo Caballero/Getty Images for Churchill Downs

Each year, the Derby Festival's Royal Court program selects five women from over 100 applicants to be the Kentucky Derby Princesses, according to the Kentucky Derby Festival.

This attendee abandoned the pastels of spring for a vibrant pink and orange hat.

Foto: A gigantic bow pulled the ombré tones together. Source: Nicholas Hunt/Getty Images for Churchill Downs

The onlooker matched her fabulous hat to her vibrant off-the-shoulder ensemble, which also showcased the delicate string of pearls around her neck.

Food Network's Giada De Laurentiis wore a full-brimmed yellow hat in 2017.

Foto: The color of the headpiece looked flawless with her golden hair. Source: Gustavo Caballero/Getty Images for Churchill Downs

The chef, writer, and TV personality smiled at Churchill Downs.

Not even a hooded raincoat could hinder this devoted Kentucky Derby fan from sporting a fabulous hat at the 2017 event.

Foto: This ultraviolet fascinator partially covered the woman's face. Source: Patrick Smith/Getty Images

Her neon-yellow hood made the accessory pop.

Katie Couric brought a pop of pink to the Kentucky Derby red carpet in May 2017.

Foto: Katie Couric attends the 2017 Kentucky Derby. Source: Diane Bondareff/AP Images

Her bright-pink fascinator matched the ruffled detailing of her dress.

Miss America Cara Mund went with a floral fascinator in May 2018.

Foto: Cara Mund attends the 2018 Kentucky Derby. Source: Diane Bondareff/AP Images

She also wore a matching fuschia dress and strappy white sandals.

This attendee perfectly matched her jewelry to the orange feathers in her hat.

Foto: A standout look from the 2018 Kentucky Derby. Source: John Minchillo/AP Images

The orange added a pop of bright color to the navy-blue ensemble.

Some people still braved the rainy days in 2018 to show off their elegant designs.

Foto: Rainy weather didn't stop guests from wearing their best hats. Source: John Minchillo/AP Images

This racegoer went with a blooming pink flower design.

Laila Ali arrived in a bold-red ensemble in May 2018.

Foto: Laila Ali attends the 2018 Kentucky Derby. Source: Diane Bondareff/Invision/AP Images

She paired an angled black fascinator with a deep-red dress and black heels.

Both Star Jones and Ricardo Lugo walked the red carpet in impressive hats.

Foto: Ricardo Lugo and Star Jones attend the 2018 Kentucky Derby. Source: Diane Bondareff/Invision/AP Images

Lugo went with a classic design, while Jones stole the show in a hat adorned with colorful floral embellishments.

Victoria Justice wore a black hat with a feathered halo in May 2018.

Foto: Victoria Justice attends the 2018 Kentucky Derby. Source: Stephen J. Cohen/Getty Images

She paired the hat with a sleek white jumpsuit and a black studded handbag.

A floral arrangement was front and center on a spectator's hat in 2019.

Foto: A standout hat at the 2019 Kentucky Derby.

The attendee made sure her oversized hat made a statement at last year's race.

Jennifer Nettles paired her lilac dress with a pastel pink fascinator.

Foto: Jennifer Nettles attends the 2019 Kentucky Derby.

The Sugarland singer's fascinator matched the pink detail in her shoes.

Michelle Williams tried to match the colors of her dress to the ones in her hat.

Foto: Michelle Williams attends the 2019 Kentucky Derby.

The singer and actress paired her peach hat with a cute high-low pleated floral dress.

In 2019, this attendee wore a rose hat with multiple components.

Foto: A fan displayed their elaborate hat at the 2019 Kentucky Derby.

The hat was covered in roses and was designed with four separate buds.

Star Jones' hat in 2019 featured feathers and frill.

Foto: Star Jones attends the 2019 Kentucky Derby.

Jones' extravagant hat was the perfect accessory for her black-and-white dress.