When it comes to choosing baby names, the royals like to keep things traditional and often choose one that pays homage to another family member or a past ancestor.
HELLO! has noticed an incredibly sweet detail about some of the Queen's female children, grandchildren and great-grandchildren.
Every couple in the monarch's immediate family has chosen to give one of their children the middle name Elizabeth, starting with Her Majesty's own daughter Princess Anne.
READ: Meet the Queen's adorable great-grandchildren - the next generation of the royal family
WATCH: Take a look at the next generation of young royals
Anne's full name is Anne Elizabeth Alice Louise, while her daughter is Zara Anne Elizabeth Tindall. Zara and her husband Mike Tindall in turn chose to name their second daughter Lena Elizabeth.
Prince Andrew and Sarah, Duchess of York's firstborn daughter is Princess Beatrice Elizabeth Mary. Likewise, Prince Edward and the Countess of Wessex's daughter is Lady Louise Alice Elizabeth Mary.
William and Kate with newborn Charlotte in 2015
The Queen's grandson Peter Phillips and his wife Autumn also chose to name their second daughter Isla Elizabeth, while the Duke and Duchess of Cambridge's daughter is Princess Charlotte Elizabeth Diana.
When it comes to welcoming the next generations of the family in future, you can almost guarantee that one of them will have the middle name Elizabeth.
MORE: 18 unusual royal baby names and their secret meanings
MORE: Pippa Middleton shares a sweet connection with niece Princess Charlotte
Several girls in the royal family share the middle name Elizabeth
The Queen's full name is Elizabeth Alexandra Mary Windsor, in tribute to her grandmother Queen Mary of Teck and her great-grandmother Alexandra of Denmark, who was Edward VII's Queen consort.
A royal baby's name isn't usually announced until two or three days after the birth. Although in Princess Beatrice's case, the Duke and Duchess of York did not confirm her name until two weeks after she was born in August 1988.
Historically, the monarch would have had to approve the name of any royal baby and although that is no longer the case, the Queen's family members usually reveal the baby's name to her before announcing it publicly.
Make sure you never miss a ROYAL story! Sign up to our newsletter to get all of our celebrity, royal and lifestyle news delivered directly to your inbox.