Not only is Celine Dion pregnant at the age of 41, the child that she has conceived was from an embryo that the music star had frozen eight years ago.

Dion's doctor, Dr. Zev Rosenwaks, tells PEOPLE that he performend the in vitro fertilization for Celine's pregnancy, and that when he informed her that the pregnancy had taken, he "could hear her chuckling" with joy. "She was very happy. So was René [Angelil, her husband]. They are both very thankful."