Australian opera singer Danielle De Niese is set to become a first time mother.

De Niese, who was once dubbed "opera's coolest soprano" by the New York Times, found fame performing as Cleopatra at Britain's Glyndebourne Festival Opera in 2005, where she met her husband Gus Christie, the event's chairman.

A statement from a festival spokesperson reads, "Glyndebourne is delighted to announce that Mr. and Mrs. Gus Christie are expecting a baby in May... Both families, Glyndebourne staff and colleagues are all thrilled by the news."

The couple, who married in 2009, will raise their child on the Glyndebourne estate, where the festival is held, in East Sussex, England.

De Niese tells Britain's Hello! magazine, "My husband was born in the house. He was warm memories of the influx of characters here and sitting in the orchestra pit with his brother."