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Meghan Markle - Markle wore this striped Martin Grant maxi dress during a visit to Bondi Beach in Australia on her last royal tour in 2018.

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Catherine, Duchess of Cambridge -

The duchess looking more like a princess in this cute, light blue number at the Wimbledon Tennis Championships in London, England.

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Princess Eugenie -

Princess Eugenie was all smiles in this colorful dress at the Serpentine Galleries Summer Party 2017 in London, England.

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Queen Sofia and Queen Letizia of Spain -

Queen Sofia and Queen Letizia of Spain emanating summery vibes at the Almudaina Palace in Palma de Mallorca, Spain.

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Diana, Princess of Wales -

Princess Diana is seen in a light see-through number designed by Jasper Conran, in Ottawa, Canada.

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Princess Beatrice -

Princess Beatrice shows how the right accessories can add a summery vibe to an outfit. The princess is at the Serpentine Gallery in London, England.

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Lady Amelia Windsor -

This member of the British royal family is actually a model. How gorgeous is that XXL ribbon?

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Mary, Crown Princess of Denmark -

Mary, Crown Princess of Denmark in a gorgeous pink dress with a brown belt during Copenhagen Fashion Week Spring/Summer 2019.

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Princess Maria-Olympia of Greece and Denmark -

This member of the Greek royal family is also a model, and she sure knows how to put a nice spring/summer look together.

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Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex -

Two gorgeous looks to inspire your spring/summer wardrobe. The Duchesses of Cambridge and Sussex at the Wimbledon Tennis Championships in London, England.

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Charlene, Princess of Monaco -

Princess Charlene of Monaco wears this black asymmetrical ensemble with pink pants underneath to the F1 Grand Prix of Monaco on May 26, 2019, in Monte-Carlo, Monaco.

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Pauline Ducruet -

The niece of Prince Albert II of Monaco mixes patterns and couldn't look more stylish at Paris Fashion Week 2018.

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Catherine, Duchess of Cambridge -

A hat is a must-wear at the Royal Ascot, and the duchess pulled off the look perfectly back in 2019 at Ascot Racecourse in Ascot, England.

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Meghan Markle - The Duchess of Sussex was the first royal to wear a denim jacket on a royal tour. You can easily copy her look, which includes a white button-down shirt, denim jacket, black skinny jeans, and a Madewell canvas tote bag.

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Diana, Princess of Wales -

Lady Di attends a charity polo match in a beautiful dress by Bellville Sassoon, at the Guards Polo Club in Windsor, England, in June 1988.

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Queen Letizia of Spain -

Letizia looking gorgeous in this floral number at Zarzuela Palace on February 21, 2020, in Madrid, Spain.

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Duke and Duchess of Cambridge -

Prince William rocks a safari-inspired look, while Kate Middleton goes adventurous with polka dots at Kaziranga National Park in Guwahati, India.

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Mary, Crown Princess of Denmark -

Crown Princess Mary wears a flowy hippie-chic maxi dress at Gråsten Palace, in Grasten, Denmark.

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Princess Eugenie -

The Princess did not disappoint at the Royal Ascot with a beautiful blue number and hat to match.

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Catherine, Duchess of Cambridge -

Kate Middleton turned heads with this classy button dress during her visit to the D-Day exhibition at Bletchley Park on May 14, 2019, in Bletchley, England.

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Lady Amelia Windsor -

Lady Amelia Windsor mixes various fabrics in this number and gives it a modern twist with chunky sneakers, at an exhibition preview at the Royal Academy of Arts on June 4, 2019, in London, England.

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Charlene, Princess of Monaco -

The princess is seen in a long, sleeveless number on the podium at Circuit de Monaco on May 27, 2018, in Monte-Carlo, Monaco.

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Catherine, Duchess of Cambridge -

The duchess looks great in this adorable sundress during a visit to the RHS Hampton Court Palace Garden Festival in London, England.

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Meghan, Duchess of Sussex -

Meghan Markle looks radiant in this white button-up dress during her visit to Tembisa in South Africa. And check out her gorgeous Stuart Weitzman pumps!

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Queen Letizia of Spain -

Queen Letizia of Spain goes for a stroll with her family in Palma de Mallorca, Spain, in a stylish olive jumpsuit.

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Princess Beatrice, Sarah Ferguson, Duchess of York, and Princess Eugenie -

The family looking gorgeous at the wedding of Petra Palumbo and Simon Fraser, Lord Lovat at St Stephen Walbrook church on May 14, 2016, in London, England.

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Catherine, Duchess of Cambridge -

Kate Middleton looks gorgeous in this flowy frock at the Back to Nature festival at RHS Garden Wisley in Woking, England.

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Meghan, Duchess of Sussex -

Meghan Markle wore this House of Nonie sleeveless trench to the Nelson Mandela Centenary Exhibition at the Southbank Centre on July 17, 2018, in London, England.

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Duke and Duchess of Cambridge and Prince George -

The couple with Prince George, looking very summery at the Sensational Butterflies exhibition at the Natural History Museum in London, England.

See also: Royals show off their best fall fashion

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