Photo: Samir Hussein/WireImage

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Meghan Markle,Prince Harryand their childrenArchieandLilishowcased a California-casual look in their 2021holiday card, but one piece of clothing will be of particular interest to royal watchers: Archie’s jeans!

The 2-year-old is blazing a relatively new fashion trail for members of the royal family, who typically keep their young boys in shorts until they are 8 years old — just askPrince George.

Prince WilliamandKate Middleton’s older son, who just marked his8th birthdayin July, has only recentlygraduated to more grownup attireafter appearing in shorts and knee socks for most of his life until this year.

George’s go-to signature look as a young boy is “definitely a look for the royals,” Sophie Mirman, founder of royal favorite children’s wear store Trotters, told PEOPLE this summer, “and there is this rather strange thing in English schools where children have to wear shorts, even in the winter, with their freezing cold knees — it’s almost like an unwritten code.”

Meghan Markle and Prince Harry’s 2021 holiday card with Archie and Lilibet.Alexi Lubomirski

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As for Meghan, she and her sister-in-law Kate each quickly picked up royal dressing and etiquette before they married into the House of Windsor.

Kate Middleton and Meghan Markle.Stephen Pond/Getty Images

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For starters, nude tights — orpantyhose, which havelong been a staple of Kate’s wardrobe(Princess Diana wasalso a fan) — are an unofficial royal mandate.

Though Meghan stepped out in bare legs for her and Harry’sengagement photo callin November 2017, sheslipped into some sheersfor her first public appearance as a newlywed three days after the couple’s May 2018 wedding. (A few months later, the Duchess of Sussex diverged from the traditional royal manicure — also sheer and neutral — withblack polish.)

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In the Sussexes' new holiday card, Meghan eschews the"Duchess Slant,“and Harry goes barefoot — a royal holiday card first for the Duke of Sussex! Earlier this month, William also broke tradition in a pair of shorts in theCambridge family’s 2021 holiday card.

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As for the woman at the helm of the royal family,Queen Elizabeth, she has her own style code: cheery and bright!

The Queen’s rainbow wardrobe isboth chic and practical. Daughter-in-lawSophie, Countess of Wessexsaid in the 2016 documentaryThe Queen at 90: “She needs to stand out for people to be able to say ‘I saw the Queen.’ Don’t forget that when she turns up somewhere, the crowds are two, three, four, 10, 15 deep, and someone wants to be able to say they saw a bit of the Queen’s hat as she went past.”

source: people.com