Susan Boyle will sing for crowds at Bellahouston Park as they wait for Pope Benedict XVI to celebrate Mass, it was confirmed today.

The Britain's Got Talent star will sing the hymn "How great thou art" as well as her signature song "I Dreamed a Dream" before the Mass starts at about 5.15pm.

Following a hymn at the end of the Mass, she will sing a farewell song to Pope Benedict as he leaves the park to travel to Glasgow Airport for his flight to London.

During the Mass she will be singing James MacMillan's new setting along with a choir of 800 and an orchestra including an organ, timpani and brass.