Pierre Casiraghi's family have arrived in Italy ahead of his second wedding to Beatrice Borromeo on Saturday. The groom's mother, Princess Caroline of Monaco, was seen travelling by boat with her daughters Charlotte Casiraghi, Princess Alexandra and another guest on Friday afternoon.
The group appeared to be in good spirits and chatted between themselves as they prepared to see Pierre tie the knot for the second time.
They are expected to attend a special pre-wedding dinner on the Borromean Islands – owned by Beatrice's aristocratic family – on Friday evening before the couple's second religious wedding ceremony on Saturday.
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Princess Caroline, Princess Alexandra and Charlotte Casiraghi have arrived in Italy
Princess Caroline and her children are not the only royal guests expected at the service; Prince Albert and Princess Charlene are set to attend, as will Pierre's aunt Princess Stephanie and her children Louis and Pauline Ducruet and Camille Gottlieb.
On the Borromeo side, Beatrice's parents Count Don Carlo Ferdinando Borromeo and Countess Donna Paola Marzotto will watch their daughter walk down the aisle. The bride's grandmother Marta Marzotto is also reported to be a witness at the ceremony.
Beatrice's older brother Carlo will most likely attend, as well as the bride's older half-sisters - Donna Isabella, Donna Lavinia and Donna Matilde.
Guests will reportedly be flown to the most private of the Borromean islands, Isolino di San Giovanni, for the service before travelling to Rocca d'Angera for the reception. The castle, also known as the Borromeo castle, sits on the shores of the Lake Maggiore, and has been temporarily closed to the public for the weekend of the wedding.
The service comes just seven days after Pierre and Beatrice said their vows in a civil ceremony at Monaco's Grimaldi Palace. While the couple were joined by a reported 700 guests to celebrate their big day with an informal summer party at the palace, their second ceremony is promised to be an even "bigger and grander affair".
All eyes will be on the bride's choice of gown after she stunned in three outfit changes throughout her first wedding – two of which were designed by Valentino. Judging by the reception her dreamy gown received after a photo was released on Sunday, she may well choose to wear a creation from the designer once more.