The Tuesday which unofficially kicks of the silly season is upon us, and to mark it, celebrities from the whole spectrum of the alphabet (well, from A to D, anyway) gather at Flemington racecourse to be seen. There are rumours they also watch some horses race, but this is unconfirmed.
To celebrate the race that stops a nation here's a round up of how everyone got ready ('cos first comes the selfies) and then what/who they're wearing.
Because let's face it, you're most likely just trying to look busy this morning until it's time to go to the office Cup lunch.
Stay tuned for breaking fashion news as we update this story as it happens.
Milliner Viktoria Novak debuted her 'first outfit of the day' early, wearing one of her own headbands and a Kate Sylvester floral frock, both from Myer (where her wares are stocked).
Model and influencer Nikki Phillips opted for a gold and red floral headband by Viktoria Novak and a dress by Asilio, also from Myer.
Fashion blogger Zanita Whittington opted for a summery large straw hat and soft floral ensemble.
Stylist and fashion influencer Nadia Bartel chose a gold headband by Christie Millinery and a sky blue frock by Alex Perry.
Racing royalty Kate Waterhouse selected a floral headband by Hatmaker By Jonathan Howard and an incredible get-up by Gucci from net-a-porter.
Let's take a look at a close up:
Blogger W by White Wolfe chose a lame-look yellow gold off the shoulder Carla Zampatti dress and a Christie Millinery headpiece.
Actress Jodi Gordon picked pink as her colour of the day with a Kim Fletcher Millinery deep fuschia bow in her hair, all from Myer. We're calling it early... this is the best makeup of the day.
Model and Myer ambassador Jennifer Hawkins shared a video of her outfit, wearing a red Misha Collection jumpsuit, red Melissa Jackson Millinery hat and her own brand of fake tan, of course.
Fashion blogger Nadia Fairfax selected a classic Gucci dress with a Erickson Beamon tiara.
Presenter and model Lauren Phillips went bright with a MSGM yellow dress, Lady of Leisure headband and simple Tony Bianco shoes.
Rachael Finch, who is also a rep for Myer wore a Viktoria Novak headpiece and Jonathan Simkhai teal dress.
Original Bachie winner Anna Heinrich went for red, too, with a dress from Cinq a Sept (from Shopbop) and a Viktoria Novak crown. Novak seems to be the headwear of choice this year.
Sunrise presenter Edwina Bartholomew joined the slew of celebs in Viktoria Novak, teamed with a Solace London printed dress.
Influencer Rozalia Russian showed a sneak peek of her look, wearing an emerald green dress (or top, at least) with a jewelled necklace, headpiece and berry lip. She also had a tough choice of which bag to take...although changed her mind and went for neither at the last minute. Tough choices.
TV presenter for E! Ksenija Lukick killed it in Rachel Gilbert with Christian Louboutin heels and again, Viktoria Novak.
A closer look at the makeup:
Model and fashion blogger Jessie Habermann selected a soft pink one shoulder dress and matching headband, both by Crista Lea.
Reminding us it's not just about the girls, model and Myer man Kriss Smith looked dapper in MJ Bale.
Milliner Voktoria Novak went all out for her second look, wearing Dolce and Gabbana and YSL, with a wow head piece.
Presenter Kate Peck went for a fun Nick Fouquet hat.
Model and Myer girl Steph Smith chose a White Suede lace gown and shoes by No21.
Fashion personality Yan Yan Chan opted for a blue floral and Koi fish print dress and red Chanel bag.
Model Pia Muehlenbeck also chose Viktoria Novak for her headwear, with a red Ginger and Smart dress.
Model Elyse Knowles selected a Herve Leger dress with a Suzy O'Rourke headband and Marc Jacobs handbag. We're picking up a red theme as the day goes on...
Pictured with magazine general manager Jackie Frank in classic black and white, fashion influencer Margaret Zhang opted for a long floral dress with ankle boots, while model Jessica Gomes wore Toni Maticevski.