So rather than being twins, the couple's two children will now be siblings.

'Celine is very, very happy,'' Murielle Blondeau, a spokeswoman for Dion, was quoted as saying Tuesday. 'Celine and Rene are full of joy. It's been a big dream for Celine to have a second child.

Local agency reports here said the sex of the child is not known.

The best-selling female artist of all time, Celine Dion has sold more than 200 million albums worldwide so far.

The youngest of the 14 kids born into a poverty-stricken musical family in Quebec, Dion was guided to greatness by Angelil who sold his house to finance the young girl's first album in 1981.

The French album went on to become number one in Quebec province, paving the way for her stardom.

Dion and Angelil became lovers but kept the affair under wraps, fearing that it will be frowned upon because he was 26 years older than her.