Twins’ baptism was held on Sunday, 10th March 2015, when they had reached 5 months. The Prince’s Palace of Monaco informed the public through their Facebook page. The Hereditary Prince Jacques and his sister Princess Gabriella was baptized in the Cathédrale de Monaco. The well-wishers had the opportunity to greet the royal family on their way back to the palace after the ceremony. The twins’ baptism was broadcast on Monaco Info.