Beatrice Borromeo and Pierre Casiraghi welcome their first daughter, expanding Monaco’s royal family

Monaco’s royal family has welcomed its newest member with the birth of a daughter for Pierre Casiraghi and his wife Beatrice Borromeo.

The Italian aristocrat, journalist and documentary maker gave birth to the baby girl on October 4.

The newborn is the third child for the couple, who have two sons: Stefano, born in 2017 and Francesco, born in 2018.

Francesco Carlo Albert Casiraghi and Beatrice Borromeo attend the celebration of Prince Albert II of Monaco's 20 years on the throne on July 19, 2025 in Monaco, Monaco. (Photo by Pascal Le Segretain/Getty Images)Beatrice Borromeo and her youngest son Francesco at celebrations marking Prince Albert II’s 20th year on Monaco’s throne on July 19. (Getty)
Beatrice and Pierre have named their daughter Bianca Caroline Marta, paying tribute to both sides of their families.

New of the baby’s birth was revealed by Monaco’s Prince’s Palace on their social media account, overnight.

The announcement was made in French and translated as: “HRH the Princess of Hanover and Countess Paola Marzotto are delighted to announce the birth of their granddaughter, born on October 4, 2025.

“Her names are Bianca, Caroline, Marta. The Prince’s Palace extends its sincere congratulations to Béatrice and Pierre Casiraghi.”

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Pierre Casiraghi, Stefano Ercole Carlo Casiraghi, Beatrice Borromeo and Francesco Carlo Albert Casiraghi attend the Monaco National Day celebrations in the courtyard of the Monaco palace on November 19, 2024 in Monaco, Monaco. (Photo by Stephane Cardinale/PLS Pool/Getty Images)Casiraghi and Borromeo have two sons, Stefano and Francesco. (Getty)
Caroline is named for Casiraghi’s mother, Princess Caroline the Princess of Hanover.

Casiraghi is the youngest of Princess Caroline’s children.

And Marta is named for Beatrice’s maternal grandmother, Countess Marta Marzotto – the celebrated Italian fashion designer, model and socialite who died in 2016.

Beatrice and Casiraghi are two of the most recognisable figures in the Monagasque royal family.

Both are ambassadors for Dior and regularly appear at fashion shows across Europe and across advertising campaigns for the French luxury brand.

On July 25, they celebrated 10 years of marriage.
Beatrice and Casiraghi are two of the most recognisable figures in the Monagasque royal family. (WWD via Getty Images)

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They married in a civil ceremony in the gardens of the Prince’s Palace of Monaco, and the bride wore four couture dresses throughout her wedding celebrations.

For her civil ceremony, Beatrice chose two Valentino gowns.

A week later, a lavish religious ceremony was held on Isolino di San Giovanni – part of the Borromean Islands owned by her family – in Lake Maggiore, Italy.
Beatrice BorromeoBeatrice showed off her baby bump for the first time in public at Villa Albani Torlonia on May 27, 2025. (Federico Lomartire/WWD via Getty Images)
The bride wore two new gowns by Armani Privé: a lace dress for the ceremony and later a custom-made silk tulle dress from Armani Privé for the reception held at her family’s castle, Rocca d’Angera.

Casiraghi is an experienced race car driver and sailor and earlier this year, he won the prestigious Admiral’s Cup.

In 2023, Borromeo directed The King Who Never Was – a three-part documentary about an Italian prince who allegedly got away with murder.

It traces the story of Vittorio Emanuele di Savoia, the last heir to the throne of Italy.

She is continuing to make documentaries through her production company, Astrea Films.

Beatrice is said to be working on a few film about the Principality of Monaco and its rich history.