Pope Leon XIV is celebrating the First Holy Mass in Sistine Hat today.

Pope Leo will lead his first sacred mass as Pope this morning after making a surprise visit to see the staff in his former residence.

Robert Prevost's life changed forever on Thursday when he was made by one of the 252 cardinals in the first American pope.

Chicago-born 69-year-old Cardinal was not seen as one of the main candidates, but soon secured the two-thirds required majority.

St. Peter's Square enjoyed white smoke, and about an hour later, the Pope's identity was discovered when he appeared on the balcony.

Pope Leo's first words as leader of 1.4 billion Catholics on Thursday evening were “The peace is with all of you”. /Periscopi/