The Emmerdale actors broke the news to fans on Tuesday (02Jun15) by uploading a fun family photo of the couple and its five-year-old son Buster on

In the black and white image, Wolfenden holds up a "Baby #2" sign, with an arrow pointing towards Webb's belly, while their boy pretends to be shocked as another chalkboard reads: "Only child expiring Dec. 2015".

Webb shared the image on her Twitter page alongside the simple caption, "Here we go again #babynumber2".

The acting couple separated in 2013 after a four-year engagement, but reunited last year (14) to give their relationship another go.