Candice Warner arrives in the rain on Derby Day at the 2019 Melbourne Cup Carnival at Flemington Racecourse in Melbourne Australia- PHOTOGRAPH BY Chris Putnam / Barcroft Media (Photo credit should read Chris Putnam / Barcroft Media via Getty Images)

Tegan Martin on Derby Day at the 2019 Melbourne Cup Carnival at Flemington Racecourse in Melbourne Australia- PHOTOGRAPH BY Chris Putnam / Barcroft Media (Photo credit should read Chris Putnam / Barcroft Media via Getty Images)

A woman wearing a rain poncho sits on the ground during 2019 Derby Day at Flemington Racecourse on November 2, 2019 in Melbourne, Australia. (Photo by Jenny Evans/Getty Images)

Race-goers look on during 2019 Derby Day at Flemington Racecourse on November 2, 2019 in Melbourne, Australia. (Photo by Jenny Evans/Getty Images)

Bonnie Anderson sings the national anthem before race 7 the AAMI Victoria Derby during 2019 Derby Day at Flemington Racecourse on November 02, 2019 in Melbourne, Australia. (Photo by Darrian Traynor/Getty Images)

Emma Freedman attends the Lexus Marquee at Derby Day at Flemington Racecourse on November 02, 2019 in Melbourne, Australia. (Photo by James Gourley/Getty Images)

Laura Byrne attends the Lexus marquee during Derby Day at Flemington Racecourse on November 02, 2019 in Melbourne, Australia. (Photo by James Gourley/Getty Images)

Michelle Payne at the Tabcorp Marquee during Derby Day at Flemington Racecourse on November 02, 2019 in Melbourne, Australia. (Photo by James Gourley/Getty Images)

Sarsha Chisholm poses at the Myer Glam Bar on Derby Day at Flemington Racecourse on November 02, 2019 in Melbourne, Australia. (Photo by Mackenzie Sweetnam/Getty Images)

Keira Mcguire attends the Bumble marquee during Derby Day at Flemington Racecourse on November 02, 2019 in Melbourne, Australia. (Photo by Mackenzie Sweetnam/Getty Images)