Her representative said the pregnancy is from the sixth round of IVF Dion underwent. He also mentioned that the 42-year-old singer recently added acupuncture to her regime.
The baby's father is Dion's husband and manager, Rene Angelil, 68. The couple has one son, 9-year-old Rene-Charles.
"We're ecstatic," Angelil told People. "Celine is just hoping for a healthy pregnancy. She was hoping for one baby and the news that we are having two is a double blessing."