John Travolta and Kelly Preston share 'wonderful' secret - they are having a baby

Having suffered through the heartbreak of losing one of their children, John Travolta and Kelly Preston have some particularly joyful news to share.

In a statement released on their websites, and later confirmed to a US magazine, John, 56, and his wife have announced that they are expecting another baby.

The new child will be their third; they already have a daughter Ella Bleu, ten, while their 16-year-old son Jett tragically died last year.

"It's impossible to keep a secret…especially one as wonderful as this," the message said. "We want to be the first to share this great news with everyone that we are expecting a new addition to our family. Love John, Kelly and Ella."

Jerry Maguire star Kelly, 47, has spoken about her desire to have another baby in the past.

A few years ago she revealed: "I thought I would get pregnant when Ella was about four. Then I wanted to work a little bit more, and now all of a sudden she's seven.

"I'm not pregnant now, but I don't have another movie project (lined up); that's all I'll say."

John and Kelly's happy announcement follows the news this week that two pet dogs owned by the Hollywood actor were run over and killed in an accident at an airport.