Charlotte Casiraghi and Gad Elmaleh have had their baby son Raphäel baptised.
The religious ceremony took place in the royal chapel of Monaco's palace on Sunday 22 June, according to Paris Match.
Charlotte, 27, and her French comedian boyfriend, 43, were joined by members of the Monegasque royal family and Gad's nearest and dearest.
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Gad Elmaleh and Charlotte Casiraghi pictured two days before the baptism
Charlotte's mum Princess Caroline led the family reunion, alongside Charlotte's siblings Andrea Casiraghi and his wife Tatiana Santo Domingo – who celebrated the baptism of their own son Sasha in January.
Charlotte's younger brother Pierre Casiraghi and his long-term girlfriend Beatrice Borromeo also stepped out for the royal occasion, alongside 14-year-old Princess Alexandra.
The christening will have been a particularly exciting moment for guests Prince Albert and his pregnant wife Princess Charlene, who will become first-time parents later this year.
Charlotte's aunt Princess Stéphanie also gathered her three children Pauline and Louis Ducruet and Camille Gottlieb together for the family affair.
Left to right: Pierre Casiraghi, Gad Elmaleh, Charlotte Casiraghi, Andrea Casiraghi, Tatiana Santo Domingo Casiraghi, Prince Albert, Princess Charlene, Princess Alexandra and Princess Caroline
Representing on Gad's side, meanwhile, were the actor's mother and his 13-year-old son Noé from his previous relationship with French actress Anne Brochet.
The baptism took place at 11:30am local time and was followed by a lavish lunch in the palace gardens.
Since giving birth in December 2013, Charlotte has made few public appearances. Her most recent sighting was two days before the baptism when she was pictured attending the Monaco Yacht Club Opening in Monte Carlo alongside Gad and her family.
The new parents looked picture perfect, with Charlotte cutting an elegant figure in a silk green halter dress and cream wedges. The mum-of-one and accomplished equestrian swept her brunette locks into a sleek ponytail, showing off her round drop earrings.
Charlotte Casiraghi gave birth in December 2013
Charlotte and Gad, who have been together since January 2012, welcomed their firstborn in the same maternity ward where the stunning royal was born in Monaco.
Baby Raphäel's birth was announced by the president of the National Council, Laurent Nouvion, who stated, "The royal family has a new member," at a late meeting of the High Assembly.
Gad, meanwhile, revealed the news on Twitter, writing in French, "Thanks to everyone for your kind messages. Very touched."