All eyes will be on Meghan Markle during her visit Down Under and it could be life changing for Australian designers should the duchess choose to wear their label.
Meghan, who became the Duchess of Sussex when she married Prince Harry in May, will visit Sydney, Dubbo, Melbourne and Queensland's Fraser Island as part of the couple's first major royal tour, starting on Tuesday.
During her ten days in Australia, Meghan is likely to wear more than 30 outfits and will be joined by a hair stylist for the duration of the tour, as Kate did when she visited in 2014.
Amanda Dishaw, who chronicles Meghan's style on the blog Meghan's Mirror, said royal watchers should expect "a lot of wardrobe changes" and high-fashion moments from the former actress.
"We notice that many days have similar styled engagements bunched together, so Meghan won't need to change in between, but there will definitely be some special occasions, like the opening ceremony of Invictus (Games) that warrant a special outfit," Dishaw told AAP.
"Meghan is known, like Kate, for her ability to speak sartorially through fashion and the stage that this tour offers will undoubtedly be one she will embrace."
Wearing local designers is part and parcel for royals on tour, Dishaw added, predicting the duchess' suitcase is filled with Australian designers.
Meghan has already shown support for Australian designers, donning a tiered tulle skirt and sheer-beaded bodice by Australian-born, London-based duo Ralph & Russo for the couple's engagement photo shoot.
"A safe bet is Ralph & Russo ... (but) we also think we could see some of the Australian brands Meghan herself has said she loves in the past like Bec & Bridge, Maurie & Eve, Ellery or Maticevski," Dishaw said.
In April, she wore a blazer by Sydney-based duo Camilla and Marc teamed with an Oroton cross-body bag to attend the Commonwealth Youth Forum reception in London.
Her influence on shoppers, dubbed the "Meghan Effect" by fashion writers, was instant: the blazer, priced at $699, and bag both sold out within minutes.
Celebrity stylist Lana Wilkinson predicts Meghan will again don Camilla and Marc, as well as Zimmermann, Scanlan Theodore and Rebecca Vallance.
"When I think of Meghan's style I think it's cool but conservative, fashion-forward but classic, and there are so many Australian brands that reflect this," Wilkinson told AAP.
While Meghan has become known for structured dresses, tailored suiting and elegant separates, Wilkinson expects some feminine, floaty dresses while visiting the sunshine state.
"For a day event, I can definitely see her in a floral number. For Fraser Island, she could definitely do a Zimmermann dress or even another feminine brand that's big overseas like Alice McCall."
Meanwhile, Alex Perry and Carla Zampatti have both reportedly sent garments to the duchess.
Wilkinson predicts the "Markle effect" will be welcomed by the Australian fashion industry.
"This is a global stage, bigger than a huge celebrity wearing their label. It could literally be brand changing - life changing - for these designers," she said.
Royal watchers will get their first glimpse of Meghan's wardrobe on Tuesday morning when Governor-General Peter Cosgrove officially welcomes the royal couple to Sydney.