Tens of thousands of people gathered at the Vatican last 7 September as Pope Leo XIV proclaimed the Catholic Church's first millennial saint, an Italian teenager dubbed "God's Influencer" for his efforts to spread the faith online.
London-born Carlo Acutis, who died of leukaemia in 2006 at the age of 15, was canonised in a solemn ceremony in St Peter's Square, with his family watching on.