French nun Sister Marie Simon-Pierre, left.Sister Marie Simon-Pierre, whose inexplicable cure from Parkinson's disease was the miracle needed to beatify Pope John Paul II, will have a starring role in the Vatican's three-day, around-the-clock beatification extravaganza.St. Peter's square at the Vatican before a solemn celebration led by Pope Benedict XVI where late Pope John Paul II was beatified, Sunday, May 1, 2011.