Prepare yourselves - and your bank accounts - for some serious fashion inspiration next month, because the Duke and Duchess of Sussex will be joined by two other fashionable royals on their first foreign tour.

In October, Prince Harry and Meghan Markle will reportedly be accompanied by Danish royals Prince Frederik and Princess Mary for their visit to Sydney.

The newlyweds will be kicking off their trip 'Down Under' with a visit to Sydney at the end of the month to launch and attend the Invictus Games, the international adaptive multi-sport event, created Harry in 2014.

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Samir Hussein//Getty Images

Both Meghan and Mary are internationally renowned royals with an eye for fashion-forward styles.

The Australian wife of the Danish royal was recently spotted in matching ruby red dresses with French First Lady, Brigitte Macron.

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JACQUES WITT//Getty Images

The Australian-born royal is also regularly photographed at public events in an array of dresses from Danish designers such as David Andersen, and is a big fan of the likes of Preen by Thornton Bregazzi, Erdem, and Stella McCartney (who created Markle's second royal wedding dress).

The Crown Princess is also regularly recognised as Meghan's sister-in-law Kate Middleton's royal doppelgänger, as a result of their similar sophisticated styles and brown locks.

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Max Mumby/Indigo//Getty Images

We can't wait to see what Mary and Meghan pull our of the bag when it comes to their royal fashion choices next month!

In June, Kensington Palace announced Harry and Meghan would be visiting four countries during their royal tour: Australian, Fiji, the Kingdom of Tonga and New Zealand.

The couple were recently spotted on a date night following the Duchess' low-profile visit to Toronto, Canada last month to visit her BFF and stylist Jessica Mulroney.

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DAN CHARITY//Getty Images

The pair - who have been enjoying time off from royal duties over the summer holidays - began their busy autumn schedule with a trip to attend a charity performance of the hit musical Hamilton at London's Victoria Palace Theatre.

During the evening, Meghan showed off her style credentials in a mini Judith & Charles black tuxedo dress and accidentally let slip the pet name she calls her husband.

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Judith & Charles

BUY NOW £327, 'Digital dress' by Judith & Charles

Meanwhile, Harry gave royal fans a taste of his musical talents as he sang a line from the hit musical to the eager crowd.

Welcome back, guys!

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Katie O'Malley is the Site Director on ELLE UK. On a daily basis you’ll find Katie managing all digital workflow, editing site, video and newsletter content, liaising with commercial and sales teams on new partnerships and deals (eg Nike, Tiffany & Co., Cartier etc), implementing new digital strategies and compiling in-depth data traffic, SEO and ecomm reports. In addition to appearing on the radio and on TV, as well as interviewing everyone from Oprah Winfrey to Rishi Sunak PM, Katie enjoys writing about lifestyle, culture, wellness, fitness, fashion, and more.