Occasionally, the young children will join their parents leaving royal enthusiasts delighted.
Kate has also been known to share snaps of her children to celebrate their birthdays.
Most recently, the Duchess of Cambridge shared separate portraits of Prince Louis and Princess Charlotte during the coronavirus lockdown.
While appearing at events or in pictures, some will have noticed Kate’s children wearing similar looks.
In both November and December 2015, Princess Charlotte appeared to wear the same outfit.
She was pictured in a pink floral dress and matching cardigan in two portraits and has worn similar styles since.
Prince George has been dressed in matching looks, often wearing a shirt and shorts combo at official events.
The Prince wore what seemed to be the same dark blue shorts and white shirt in portraits taken in 2015 and 2016.
This could also be a nod to Prince William and other members of the Royal Family.
Prince William was often dressed in similar styles to what Prince George has worn.
By choosing these outfits, Kate could be making a nod to royal tradition.
How did Kate Middleton become a royal?
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.
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.
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 become the Duchess of Cambridge on the day.