Elvis Costello to be father of twins

British singer Elvis Costello and his wife Diana Krall are set to have twins.

Krall told People magazine in the US that the babies are due in December.

The couple know their sexes but are not revealing them publicly.

“We know, and everyone’s been asking me, but we’re keeping that private because we just want to have something for ourselves,” Krall told People.

London-born Costello, 51, and Krall, 41, married almost three years ago.

Krall added that there were twins on her mother’s side of her family.