
has stepped in for today as he has The Duke of Edinburgh, 61, is in Vatican City for the event, with an estimated 250,000 pilgrims and a number of world leaders.
The prince is the only member of the British in attendance. He has not been joined by his wife Duchess Sophie, who is instead attending day four of the Royal Windsor Horse Show.
The gathering in St Peter's Square today marks the official start of Leo's papacy as the first north American pontiff.
Cardinal Robert Prevost, 69, was elected earlier this month following the death of Pope Francis on April 21.
came less than two weeks after he saw King Charles, 76, and Queen Camilla, 77,
The King did not attend the funeral, with Prince William instead
, William attending on behalf of the King was due to a longstanding royal rule, with Charles having attended Pope John Paul II's funeral in 2005 instead of his mother the then-Queen Elizabeth II.

Pope Leo XIV was elected on May 8 by 133 cardinals from 70 countries in just over 24 hours, giving the Church a pope less than three weeks after the death of Pope Francis.
The King at the time.
Prince Edward's appearance in Vatican City today comes less than 24 hours after he yesterday with King Charles and Duchess Sophie.
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