The news was broken by James Cordon on Twitter, by uploading a video of Gordon on his American chat show, The Late, Late Show with James Corden, along with the caption 'HUGE congratulations to @GordonRamsay and Tana on the news of a new baby on the way!'
The big reveal came as James questioned Gordon about his family, asking, 'You have four teenagers, that's a lot of hormones going on, are you and Tana surviving that?'
The TV chef replied, 'Well, yeah, three girls and a boy and, um, one more on the way.'
Tana with her children Megan, Holly, Jack and Matilda
It seems like we're not the only ones who found the happy news hard to believe, as James jumps up, pulling Gordon into a hug, before exclaiming, 'No! No, No! Congratulations - oh my god'.
Gordon replies by saying, 'I know, I'm a little bit nervous. September (presumably referring to Tana's due date).' He then goes on to discuss the sex of the baby, saying, 'I mean obviously I'd be happy with another girl but four girls, four weddings,' before James jumps in to say 'one funeral' while pointing at Gordon, before the dad finishes by saying 'four sweet sixteenths, four boyfriends.'
The new addition to the family will join Megan, 18 (next week), twins Holly and Jack, 16 and Matilda, 14 - bringing the total Ramsay family head count up to seven people! The news comes after fellow chef Jamie Oliver announced that he and his wife Jools were also expecting their fifth child together just last month.
Gordon and Tana have been married for 20 years
The clip is finished off by Gordon revealing that Tana is 'excited' and doing well.
What lovely news - congratulations to all the Ramsays!