Louis and Marie Ducruet.Photo: Stephane Cardinale - Corbis/Corbis via Getty

Monaco’s royal family is adding another member!
Louis Ducruet — the son of Monaco’s Princess Stéphanie and the grandson ofPrincess Grace(formerly American actress Grace Kelly) — and his wife, Marie Chevallier, are expecting their first child. They shared the news with a sweet Instagram post on Wednesday, using their dog’s bandana — which read “soon to be big brother” — to share the exciting news.
“An adventure is about to begin,” they captioned the snap.
The pup, named Pancake, has joined Marie and Louis on many adventures documented on their Instagram pages. Mariewrote in tributeto her pet in 2019, “Since the first day we met, spending the day in the train to bring this little boy home, from Paris to Monaco, we knew our lives will never be the same. This boy brought us so much happiness and we can’t wait to spend so many more years to come with him ❤️ We love you - Mom & Dad.”
“I was really attached to my grandfather,” Louis said, explaining the couple’s choice of venue. “And I wanted him to be here with me. At some point, he will be with me during the wedding ceremony at the cathedral. That’s why we chose it, and Marie supported me in this decision, even though the place is big and there’s a protocol, but that’s the only way for my grandfather to be with us.”
David Niviere/SC Pool - Corbis/Corbis via Getty

Can’t get enough ofPEOPLE’s Royals coverage?Sign up for our free Royals newsletterto get the latest updates onKate Middleton,Meghan Markleand more!
Louis and Marie joined the rest of Monaco’s royal family forNational Day celebrationsover the weekend. Marie wore a pink jacket over a dress with a statement headband for the occasion.
source: people.com