Ten-year-old Savannah Phillips, who was born in 2010, is the Queen and Philip's eldest great-grandchild (left) while her younger sister, Isla, has just turned nine and was born in the Queen's Diamond Jubilee year of 2012 (pictured with Autumn and Peter in 2019)
1. Savannah Phillips
Ten-year-old Savannah Phillips, who was born in 2010, is the Queen and Philip's eldest great-grandchild.
She is the daughter of the Princess Royal's son, Peter Phillips, and his ex-wife Autumn.
The couple announced they were divorcing in 2020, but share custody and co-parent their children.
At Eugenie's wedding in 2018, bridesmaid Savannah had pageboy Prince George trying to stifle laughter when she entertained him by pretending to play the trumpet in St George's Chapel.
She was also once seen pushing George - her second cousin - down a grassy bank at a polo match, and also putting her hand over his mouth as the National anthem was played while they were on the Buckingham Palace balcony for Trooping The Colour.
2. Isla Phillips
Savannah's younger sister, Isla, has just turned nine and was born in the Queen's Diamond Jubilee year of 2012.
Her middle name is Elizabeth in honour of the monarch. The Phillips sisters are not entitled to a royal title.
They are usually kept out of the limelight - but sometimes join other members of the family on the Buckingham Palace balcony for major events.
They are mostly spotted enjoying themselves as they play together at horse trials.
3. Prince George
Future king George, born in 2013, is the oldest of the Duke and Duchess of Cambridge's children (pictured front left)
Future king George, born in 2013, is the oldest of the Duke and Duchess of Cambridge's children.
The seven-year-old has spent much of lockdown at William and Kate's countryside home, Anmer Hall in Norfolk.
The prince is known to be a fan of helicopters, and all things police-related.
Football-mad George is also a passionate Aston Villa fan, just like his father.
George is seen as shyer than his younger sister, Princess Charlotte, occasionally appearing a little reluctant in front of the cameras.
Third-in-line George and his siblings call the Queen 'Gan Gan'.
4. Mia Tindall
Mia is the eldest child of former England rugby star Mike Tindall and Olympic medal-winning horsewoman Zara, daughter of the Princess Royal (pictured together in 2019)
Mia is the eldest child of former England rugby star Mike Tindall and Olympic medal-winning horsewoman Zara, daughter of the Princess Royal.
The fun-loving youngster, who was born in 2014, has a reputation for being mischievous.
She is often spotted running around with her father and cousins, Isla and Savannah Phillips, at horse eventing competitions.
During a portrait shoot for the Queen's 90th birthday, Mia, then two, had the privilege of holding her great-grandmother's classic black handbag.
Like Savannah and Isla, she is not an HRH, nor does she have a title.
5. Princess Charlotte
The Cambridges' five-year-old middle child, Charlotte, is known for her confident, feisty character (pictured here with the Duchess of Cambridge in 2019)
The Cambridges' five-year-old middle child, Charlotte, is known for her confident, feisty character.
The princess, who was born in 2015, likes spicy food and is nicknamed 'Lottie'.
She shares a love of horses with the Queen, and bears a resemblance to her great-grandmother when she was a child.
At the Duke and Duchess of Sussex's wedding in 2018, the playful fourth in line to the throne stuck out her tongue as she arrived by car.
She repeated the gesture while watching a presentation
