Meghan Markle and Prince Harry's first tour as a married couple will see them tackle 76 engagements in just 16 days.
And with such a tight schedule, the Duchess of Sussex won't have much time to change outfits.
But Susan Kelley, who is coeditor of fashion blog WhatMeghanWore.net, told People the former actor will still need more outfits than the average newlywed.
"The schedule is so jam-packed, I think there will be days when we only see the Duchess wearing one outfit," she said.
"I think we will see Meghan wearing 30 to 35 ensembles in total. I just don't see her changing outfits for the sake of it."
According to Ms Kelley, Meghan's fashion choices will be under enormous scrutiny and she is likely to have sought help from her best friend and unofficial stylist Jessica Mulroney.
"This is her big debut on the world stage, and the pressure has to be intense," she said.
Like other royals before her, Meghan is likely to go more casual for the warmer climate and pay tribute to local designers during her visit to Australia, New Zealand, Fiji and Tonga.
The Duchess of Sussex has previously worn Australian brands Camilla & Marc, Ralph & Russo, Alice McCall and Oroton.
"Meghan and Harry are visiting countries with a more casual dress sense; we shouldn't expect to see them dressed as formally as they would be at a Buckingham Palace state banquet," Ms Kelley said.
Meghan and Harry will arrive in Australia on Monday for the start of their tour, which officially kicks off on Tuesday.