They may be young now, but one day these toddlers and young children will reign on the thrones of their countries. So who are the youngest heirs in Europe?
Hereditary Prince Jacques of Monaco:
Although born after his sister, Princess Gabriella who is two minutes older, Hereditary Prince Jacques will one day be the Sovereign Prince of Monaco as Monaco abides by male-preference primogeniture.
Born to Prince Albert II and Princess Charlene, Jacques came into the world on 10 December 2014 in the Princess Grace Hospital.
He has three older siblings: Jazmine Grimaldi and Alexandre Grimaldi-Coste from his father’s previous relationships and Princess Gabriella, his older twin sister.
Jacques and Gabriella will turn five in December.
Princess Estelle of Sweden:
Princess Estelle, who just turned seven in February, is the daughter and elder child of Crown Princess Victoria and Prince Daniel of Sweden. Her grandfather is King Carl XVI Gustaf.
In 1980, Sweden changed their laws of succession to absolute primogeniture allowing Estelle’s mother to assume the role of Crown Princess from her younger brother, Prince Carl Philip.
Princess Estelle Silvia Ewa Mary was born on 23 February 2012 in Solna’s Karolinska University Hospital to Crown Princess Victoria and Prince Daniel.
She has one younger brother, three-year-old Prince Oscar.
Prince George of Cambridge:
Undoubtedly the most well-known of these young future monarchs, Prince George’s birth was celebrated across the world when he was born in the Lindo Wing at St Mary’s Hospital in 2013.
As the child of the heir’s heir, George has quite some time before he will ever ascend the throne as his Gan-Gan (The Queen) is still on the throne at 92.
Prince George Alexander Louis of Cambridge was born to the Duke and Duchess of Cambridge on 22 July 2013. He has two younger siblings: Princess Charlotte (born 2 May 2015) and Prince Louis (born 23 April 2018).
He turns six in July.
Princess Amalia de Nassau:
Of course, of these young royals who are destined to be on the throne, Amalia is an exception. If her aunt and uncle, Hereditary Grand Ducal Couple have children, Amalia will no longer be the future Grand Duchess.
As it stands now, once her uncle, Hereditary Grand Duke Guillaume becomes Grand Duke, her father, Prince Félix will become the Hereditary Grand Duke meaning once Félix ascends the throne, Amalia will be the heir and first in line.
Princess Amalia Gabriela Maria Teresa was born to Prince Félix and Princess Claire of Luxembourg on 15 June 2014 at the Grand Duchess Charlotte Maternity Hospital in Luxembourg. She has one brother, two-year-old Prince Liam.
She will celebrate her fifth birthday this June.