Boston-3/29/13- Dancers from the Coyle School of Irish Dance in Philadelphia laugh as they look at gout photos of themselves on a computer taken by a studio photographer set up at The World Irish Dancing Championships being held at the Hynes Convention Center. It is only the second time in it’s 40 year history that the eight-day event is held outside Ireland and Scotland. Organizers expect twenty-thousand people from around the globe to attend the event.