The pair of Emmerdale stars, who welcomed baby Bowie back in December, are also parents to six-year-old son Buster.
Speaking to The Daily Mirror, dad Matthew - who plays David Metcalfe in the ITV soap - explained the couple's desire to add to their brood. He said: 'While we are still pretty knackered now we might as well go for number three and keep that knackeredness ball rolling.'
Last month, when the couple revealed they called their son Bowie (a popular celebrity baby name choice!) they had to refute claims it was a tribute to the late singer David Bowie, as Matthew said it was chosen before the singer's death in January.
He told OK! Magazine, 'Don't get me wrong, I'm a fan of David Bowie but that wasn't why we chose the name. We just both loved it.'
The father-of-two added; 'We'd chosen the name before he was born and named him straight away, and then David Bowie died three weeks later.'
In the interview Charley also explained how her waters broke while she was out shopping; 'We were actually in the car on the way to Mothercare when it happened! I'm so glad I wasn't in the shop!'
Charley's festive bundle of joy was born on the 19th December at 6.34pm, with the actress confirming the news via Twitter, seemingly impatient to share the family's happy announcement with her fans.
On New Year's Eve she wrote 'Happy new year everyone. Excited to head into 2016 as a family of four.'
Happy new year everyone. Excited to head into 2016 as a family of 4ð‘©âð‘©âð‘¦âð‘¦ð’— Charley Webb (@MissCharleyWebb) December 31, 2015
Fans were quick to congratulate the Emmerdale golden girl with Twitter user Linda Wood writing, '@MissCharleyWebb Congratulations on the birth of your baby boy, you have both been truly blessed to have 2 beautiful babies in your life, XX'
The couple announced their pregnancy back in June 2015 with a playful pregnancy picture.
In the black and white picture that Charley tweeted the couple can be see holding up a 'baby#2 sign' and pointing at the actress' stomach. Poor little Buster looks less excited, seen with his hands on his head in exasperation. His own sign reads, 'Only child expiring Dec 2015.'
And expired it has, but we're sure Buster is looking a little less upset these days with the exciting role of big brother now firmly under his belt.