She is also happy to display pieces from her private jewellery collection when stepping out.

Earlier this year, Kate started wearing a gold pendant that had a sweet dedication to her family.

The Duchess of Cambridge was spotted with a long gold chain necklace that had a circular pendant on it.

The style of jewellery has a link to her children, according to Claire Adler, jewellery specialist and founder of Claire Adler Luxury PR.

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Speaking to Express.co.uk, she said: “Initial pendants are a super personal style of accessory and are often worn as a way to celebrate one’s children or other beloved family members.

“A longer necklace allows the wearer to see and remember the pendant and it’s symbolism at all times.

“This pendant worn by Kate is the gold diamond midnight moon necklace from Daniella Draper, personalised with the initials of Kate’s three children, with G, C and L proudly referring to Prince George, Princess Charlotte and Prince Louis.

“The moon charm on the pendant represents immortality, eternity and enlightenment.”

While Kate is sure to have access to any jewels that she wants, the royal shows her family side by picking the personalised pendant.

The expert explained wearing this can also help her express her own individuality.

Claire added: “Initial necklaces are increasingly popular because they are a way of expressing individuality and also they can carry meaning for the wearer and potentially also a person who gifts the jewel.”

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How did Kate Middleton become a royal?

Early life

Kate Middleton, or Catherine, Duchess of Cambridge, was born on 9 January 1982 at the Royal Berkshire Hospital, Reading, England.

She was born to Michael and Carole Middleton, a former flight dispatcher and air hostess. The couple founded a party supplies company, Party Pieces, in 1987 – now estimated to be worth £30 million.

Kate has a younger sister Pippa Matthews, 34, and a younger brother James Middleton, 31.

Education

Kate and her family moved to Amman, Jordan, in 1984, where the future Duchess was educated at an English-speaking nursery school.

After moving back to Berkshire the family sent Kate to private school, St Andrews School. She went on to briefly study at Downe House before moving onto Marlborough College where she boarded.

For university the young Kate attended the University of St Andrews in Fife, Scotland. Here she was awarded an undergraduate MA (2:1 Hons) in history of art.

Relationship with Prince William

Kate met Prince William when they were both studying at St Andrews, and both living in St Salvator’s Hall. Famously, William reportedly took a fancy to Kate after she wore a see-through dress during a fashion show.

In 2003 the couple began dating and lived together during their second year of university.

The couple split in April 2007, however, in October they were back together.

Wedding

Prince William proposed to Kate Middleton with his late mother Princess Diana’s engagement ring in October 2010. The couple were holidaying in Kenya at the time.

On 29 April 2011 they married at Westminster Abbey with a whopping 26 million watching the event live.

Kate wore an Alexander McQueen dress worth a reported £250,000 on the big day.

Kate assumed the title “Her Royal Highness The Duchess of Cambridge” and also became the Duchess of Cambridge on the day.