Celine Dion. Photo by AP.
The superstar singer revealed the sex of the babies in a brief statement on Friday on her website.
Dion already has a son, Rene Charles, with her husband and manager, Rene Angelil.
The 42-year-old singer had undergone several rounds of in-vitro fertilisation to become pregnant again and has spoken openly about her difficulties having children.
A representative for the singer was not immediately available to comment on the posting.
