The world will be watching Prince Jacques and Princess Gabriella on their big day

By Simon Perry and Peter Mikelbank
Updated May 08, 2015 05:00 PM
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Credit: Pascal Le Segretain/Getty

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A historic week for royal baby watchers continues with Sunday’s baptism of Monaco’s royal twins, Prince Jacques and Princess Gabriella.

The ceremony comes exactly five months after the December 10 birth of the twins to Prince Albert and Princess Charlene.

And in a history-making first, it will be broadcast live on television and shared worldwide on social media (with replay available for those unable to make a pre-dawn wakeup call!).

On Sunday morning, Monaco’s ruling family and Charlene’s family, the Wittstocks, will gather at 10:30 a.m. (4:30 a.m. ET) in the Monaco Cathedral.

“The day is being planned as a family celebration,” a source tells PEOPLE. “The prince’s family – including Princess Caroline, Princess Stephanie, the Wittstocks and their families will be out in force.”

“But Monaco is a family of 8,000 people, and this is an opportunity to celebrate that,” the source adds.

Royals fans will be able to enjoy every minute of the celebration as it will be televised on Monaco Info, streamed on Monaco Channel and promoted on the palace’s Facebook page. Crowds can also view the morning service from a giant screen in the palace’s main square.

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Following the service, Albert, 57, and Charlene, 37, will walk through the crowds as they make their way back to the palace. Organizers have arranged for traditional Monegasque and Provencal folk and dance groups to line the route as part of the festivities.

The royal twins’ godparents have also been revealed. In a nod to Gabriella’s South African roots, Nerine Pienaar, wife of former South African rugby player Francois Pienaar, has been chosen as the princess’ godmother, and Princess Charlene’s younger brother, Gareth Wittstock, will be her godfather.

Diane de Polignac Nigra, a cousin from the Grimaldi family, will serve as Jacques’ godmother, and Christopher Le Vine Jr., an American cousin and grand nephew of Princess Grace, will be the prince’s godfather.

Royal watchers will turn their attention next to Princess Charlotte‘s upcoming christening.

Prince William and Princess Kate held Prince George’s christening three months after their son’s birth, which would mean a late summer ceremony for the baby princess, who is now settling into life at Anmer Hall.