Prince Albert II and Princess Charlene of Monaco have announced they are expecting their first child, who will be heir to the throne of the tiny principality.
The couple, who wed in 2011, released a short statement describing their "immense joy".
Albert, 55, has fathered two children prior to marrying the South African former Olympic swimmer Charlene, but neither has a claim on the throne because they were born out of wedlock.
The couple's baby will replace Albert's older sister, Princess Caroline, as heir to the throne.
Germany's bumper sporting weekend has continued with Nico Rosberg claiming victory in Formula 1's flagship Monaco Grand Prix ahead of his countryman Sebastian Vettel.
Vettel's Red Bull teammate Mark Webber was third, ahead of Rosberg's Mercedes teammate Lewis Hamilton.
McLaren's Jenson Button was the next best placed Brit in sixth, while Paul Di Resta was ninth in his Force India and Marussia's Max Chilton finished 14th.
Today's race came after German football giants Bayern Munich were crowned UEFA Champions League winners.
They beat Borussia Dortmund 2-1 in the competition's first final competed by two teams from the Bundesliga.
Read: More on the celebrations that followed Bayern's victory