Dion, 45, is a mother of three boys with her husband, Rene Angelil, but she said she'd really love to have a little girl to add to her family.
"There's nothing that can top being a mother," she said. "I would like more but I don't know if it could happen. I want the twins and me to have quality time."
Dion underwent in-vitro fertilization to conceive her three sons, Rene-Charles, 12, and twins Eddy and Nelson, 3. And though she admits it's "selfish to keep wanting more," she wants to give her boys a sister -- and it sounds like a pal for herself.
"Imagine all the shopping, the jewelry, the shoes, the dresses I could give to her," she said.
Dion released Loved Me Back To Life to a No. 2 debut on the BIllboard Hot 100, selling 77,000 copies in its first week.
The album is the singer's highest-charting entry since One Heart in 2003, which also opened second.