Hereditary Grand Duke Guillaume and his wife Stéphanie had announced in December that they were expecting a baby. The big day has come: the royal baby saw the light of day this Sunday 10 May.
The new heir to the throne was born on 10 May at 5.13am.
His parents have named the child Charles Jean Philippe Joseph Marie Guillaume.
The Grand Ducal court released a statement confirming that both the Crown Princess and her baby are doing well.
The child weighs 3.19 kg and is 50 cm in height.
The royal baby is second in line to the throne after his father Hereditary Grand Duke Guillaume.
A 2011 law established that the first child of the couple will become heir to the throne, regardless of its gender. Prior to this groundbreaking law, women only had a claim to the throne if there was no male heir apparent.
Guillaume and Stéphanie were married on 20 October 2012. The couple moved to London in 2018, where Guillaume attended London's Royal College of Defence Studies while his wife pursued studies in history of art at the renowned Sotheby's Institute.
The couple moved back to Luxembourg in 2019 and has since then lived at Fischbach castle. The news of Stéphanie's pregnancy was announced shortly after.