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Celebrity arrivals have begun to trickle in with their monochrome looks for Derby Day held at Flemington Racecourse in Melbourne on Saturday.
But while there are some standout looks, not everyone has hit the mark at this year's impromptu fashion show.
Australia's 'hottest footy WAG' Chelsea Becirevic risked a serious wardrobe malfunction as she stepped out in a daring number alongside her boyfriend.
Becirevic, who is dating AFL player Ivan Soldo, almost spilled out of her frock as she put on a busty display inside the Birdcage at Melbourne's Spring Racing Carnival.
The 25-year-old model poured her figure into a lace, capri-cropped bodysuit which had long sleeves and a fitted black corset.
It also featured a plunging neckline that showed off her ample cleavage.
Australia's 'hottest footy WAG' Chelsea Becirevic, 25, risked a serious wardrobe malfunction as she stepped out in a daring number alongside her boyfriend Ivan Soldo
Becirevic almost spilled out of her frock as she put on a busty display inside the Birdcage at Melbourne's Spring Racing Carnival
The model poured her figure into a lace, capri-cropped bodysuit which had long sleeves and a fitted black corset
The blonde bombshell had her hair styled in large, bouncy waves, accessorised with a Louis Vuitton handbag, a wide-brimmed hat and strappy heels.
Elsewhere, fashion designer Pip Edwards opted for a bizarre pirate look.
The P.E Nation founder, 45, slipped a tricorn-esque hat onto her blonde locks as she stepped out in a very frilly black number.
She paired the eclectic top with bell-bottom slacks and pointed white pumps.
Lindy Klim also missed the mark with her avant garde style, slipping on an oversized black jacket with bowed sleeves.
The Balinese princess, 46, risked a wardrobe malfunction as she wore nothing beneath the blazer, which featured a plunging neckline.
Scraps of white tulle and lace hung down her legs as she pulled her dark locks back into a tight up-do, and completed her outfit with a pair of black heels.
So who stole the spotlight on Derby Day? None other than the 'Queen of WAGs' Rebecca 'Bec' Judd.
Elsewhere, fashion designer Pip Edwards, 45, opted for a bizarre pirate look
The P.E Nation founder slipped a tricorn-esque hat onto her blonde locks as she stepped out in a very frilly black number
She paired the eclectic top with bell-bottom slacks and pointed white pumps
Lindy Klim, 46, also missed the mark with her avant garde style, slipping on an oversized black jacket with bowed sleeves
The Balinese princess risked a wardrobe malfunction as she wore nothing beneath the blazer, which featured a plunging neckline
Scraps of white tulle and lace hung down her legs as she pulled her dark locks back into a tight up-do, and completed her outfit with a pair of black heels
The mother-of-four, 42, looked angelic in an all-white ensemble as she flaunted her frame in a lace corset gown which featured an off-the-shoulder neckline.
She accessorised with a pair of long white gloves to match her slingback kitten heels and designer handbag.
Opting for a bronzed, but natural-looking, makeup look, Bec left her brunette tresses down and covered them with a wide-brimmed hat.
Nadia Bartel was another star who stole the show, stepping out in a white corset with a flowing skirt and structured shoulders.
The socialite, 40, kept her accessories minimal with a black clutch and fascinator as she hid her eyes behind a pair of dark sunglasses.
Tammy Hembrow made a shocking appearance at Derby Day, marking her first-ever public foray into the spring carnival. She has quietly attended with friends in the past.
The fitness influencer, 31, who made headlines this year for her brief fling with AFL star Bailey Smith, slipped into a strapless white corseted top with a black skirt.
She covered her blonde tresses with a wide black cap, carrying a matching clutch in hand and slipping on a diamond bracelet.
So who stole the spotlight on Derby Day? None other than the 'Queen of WAGs' Rebecca 'Bec' Judd, 42
Bec's sister Kate Twigley also made an appearance at Derby Day
The sisters were all smiles as they posed together
Tammy Hembrow, 31, made a shocking appearance at Derby Day, marking her first ever public foray into spring carnival. She has quietly attended with friends in the past
The fitness influencer who made headlines this year for her brief fling with AFL star Bailey Smith, slipped into a strapless white corseted top with a black skirt
She covered her blonde tresses with a wide black cap, carrying a matching clutch in hand and slipping on a diamond bracelet
Tammy was spotted cuddling up with Paul Versace and his model partner Bayle Smith
Nadia Bartel, 40, was another star who stole the show, stepping out in a white corset with a flowing skirt and structured shoulders
The socialite kept her accessories minimal with a black clutch and fascinator as she hid her eyes behind a pair of dark sunglasses
Stella Klim, 19, ensured she didn't follow in her mother's footsteps, slipping her figure into a classic silhouette for the carnival
The model smouldered in full skirts and a collared halter neck, flaunting her narrow waist in a heavily cinched bodice.
Annalise Dalins, 24, was also in attendance with her AFL star boyfriend Josh Daicos
The model also opted for an all-white look, putting on a leggy display in a strapless mini-dress
Lexus ambassador Jessie Murphy stunned in a lacy white gown with a plunging neckline
The blonde beauty paired her looks with white pumps and a pill box fascinator
Brooke Warne showed off her effortlessly chic style in a black mini dress with a white floral detail and sheer sleeve draped over her shoulders
Kate Waterhouse, 41, stunned in an off-the-shoulder black gown
Former tennis WAG Hannah Dal Sasso, 24, kept her tresses covered with a white scarf, opting for a suit dress
She was spotted cuddling up to her new boyfriend Rupert McLean
Melbourne 'It Girl' Rozalia Russian, 37, flashed her wealth in a black skirt suit as she accessorised with gold-heeled designer pumps and a designer handbag
Lana Wilkinson, 43, slipped into a classic black maxi dress
Stella Klim ensured she didn't follow in her mother's footsteps, slipping her figure into a classic silhouette for the carnival.
The model, 19, smouldered in full skirts and a collared halter neck, flaunting her narrow waist in a heavily cinched bodice.
Adding a soft curl to her brunette locks, she slipped on a wide-brimmed hat and accessorised with simple black pumps for the occasion.
Annalise Dalins was also in attendance with her AFL star boyfriend Josh Daicos.
The 24-year-old model also opted for an all-white look, putting on a leggy display in a strapless mini-dress.
Brooke Warne showed off her effortlessly chic style in a black mini dress with a white floral detail and sheer sleeve draped over her shoulders.
The eldest daughter, 27, of the late cricketer Shane Warne showed off her recent hair transformation from blonde to copper as her locks were styled in loose waves.
She completed her look with a pair of black slingback heels and a head-turning pillbox hat that featured a white bow.
Sarah Lucas and Con Ilio also turned up the glam as they stepped out in their monochrome looks
Australian actress Tessa James, 34, made a rare appearance at Derby Day
The soap star stepped out in polka dot attire for the occasion
Samantha Armytage, 49, was all smiles as she stepped out with Nine
Karl, 51, and Jasmine Stefanovic, 41, looked every inch the matching couple in all-black ensembles
Brodie Ryan, 36, known as Collingwood legend Nathan Buckley's ex, slipped into a classic black tank top with a tulle white skirt as she flashed her Yves Saint Laurent handbag
She spruced up her look with several pieces of silver jewellery
Bachelor golden couple Anna, 38, and Tim Robards, 43, mismatched, with the blonde beauty slipping into all-black as her husband opted for a white pinstripe suit
US actress Michelle Monaghan, 49, who is currently starring in The White Lotus, enjoyed a taste of Down Under festivities with a very daring thigh split
Australian model Moraya Wilson, 24, stole the show in an extravagant white gown with black stocking gloves
AFL WAG Lexi Mary, 26, showed off her figure in a white, one-shouldered dress
Dale Thomas, 38, and wife Natasha Bongiorno looked dashing as they arrived arm-in-arm
AFL WAG Brit Selwood, 32, stepped out in an all-white ensemble for the day
Elle Ray, 22, exuded elegance in a black fitted top and glittering skirt
Francesca Cumani, 42, stepped out in a halter neck gown which dropped into a subtle A-line skirt
Francesca Cumani stepped out in a halter neck gown which dropped into a subtle A-line skirt.
The Nine horse racing presenter, 42, paired the frock with a pair of staple black pumps and a matching fascinator.
Emma Scodellaro followed suit, putting on a theatrical display with an oversized, flowing white poncho top and loose white slacks.
The Fashions on the Field judge, 47, rocked a black trim to her ensemble, hiding her eyes behind large sunglasses and topping the look off with a wide-brimmed hat.
Viera Macikova was the picture of elegance in a white peplum top with a black V-neck.
The race day veteran, 49, opted for white wide-legged slacks with a large black floral print to match her wide-brimmed hat and designer handbag.
Derby Day kicks off a massive week of Melbourne Cup Carnival fun at Flemington Racecourse each year.
It follows the tradition of English racetrack Royal Ascot, where top hats and tails, and black and white attire are required.
Australian sailor Jessica Watson, 32, opted for a simple strapless black dress
Viera Macikova, 49, was the picture of elegance in a white peplum top with a black V-neck
Channel Nine presenter Ally Mosley stepped out in a black gown with diamante encrusted buttons
Renee Fay Lamb, 34, flashed her tattoos in a strapless black dress
Geri Mayall was the picture of elegance in a white gown with matching pumps
Retired jockey Michelle Payne, 40, flashed some skin in a sheer mini dress
Max, 33, and Jessica Gawn looked every inch the loved-up couple as they arrived
Mikayla, 31, and Jack Crisp, 32, matched in all-black outfits, with the WAG putting on a very risqué display with a low-cut neckline
Deborah Quinn chose to layer up for the occasion
Crystal Kimber-Peters stepped out in a black latex dress
The monochrome dress code really kicked off in 1960 when Melbourne Cup attendees were offered a wardrobe prize for best dressed.
The catch was that participants had to wear black and white to celebrate the Black & White whiskey manufactured by collaborator James Buchanan and Co.
The Melbourne Cup, known as the race that stops the nation, is the centrepiece of the annual spring carnival and is all about bright colours and patterns.
This is where Fashions on the Field comes into play.
First established in 1960, Fashions on the Field rewards the best-dressed punter with a prize, prompting racegoers to wear their boldest, most fabulous outfits.
Meanwhile, Oaks Day, also known as Ladies' Day, encourages women to wear 'all things feminine'.
The final day of the week, Stakes Day, is far more relaxed, and while some rules are in place, it's nothing compared with the kick-off event of the season.
