A pal told The Sun that Billie, who is enjoying a romantic break in Mauritius with her husband Laurence Fox, is three months pregnant. The friend said: 'Billie and Laurence are both absolutely over the moon.
'They are stunned as they only wed on New Year’s Eve but they can’t wait to be parents to their little Fox.'
The couple, both actors, are said to have broken the news to family before they jetted off on holiday.
The pair met when they both starred in West End stage play Treats in late 2006. They moved to a house in the Sussex countryside soon afterwards.
The source added: 'One reason they wed just a year after meeting was because Billie was already feeling broody.'
We hear the Belle De Jour star has been giggling over boys' names for the baby she's expecting with husband Laurence Fox.
A source says: "Billie thinks she is having a boy. She was saying to the crew she needs a list of boys' names and was laughing about 'Timmy'.
"And her cravings are getting out of control. She's scoffing chocolate croissants, bars of chocolate and hot chocolate."
The baby's sure gonna be sweet!