UNITED KINGDOM, London : Prince William (L) and Kate Middleton (C) exchange rings in front of the Archbishop of Canterbury at Westminster Abbey, on April 29, 2011 in London AFP PHOTO/ POOL/ DOMINIC LIPINSKI
Britain's royal wedding: when they exchange their rings
UNITED KINGDOM, London : Prince William (L) and Kate Middleton (C) exchange rings in front of the Archbishop of Canterbury at Westminster Abbey, on April 29, 2011 in London AFP PHOTO/ POOL/ DOMINIC LIPINSKI