In a weekend full of exciting celebrity baby news, the 30-year-old England captain took to Twitter to share the news of the family's arrival.
After months of speculation, Wayne couldn't wait to confirm the sex of their new addition - who weighed 8lb 1oz; 'Our gorgeous little boy arrived today... we are over the moon.'
Our gorgeous little boy arrived today.— Wayne Rooney (@WayneRooney) January 24, 2016
Kit Joseph Rooney. 8Ib 1oz.
We are over the moon.
Wayne, whose annual salary is £13,000,000, wasted no time in revealing the baby's name, Kit Joseph Rooney. The family already have two sons, Kai Wayne, six, and Klay Anthony, two, so will be continuing the 'K' naming tradition.
Coleen, 29, a former columnist for Closer magazine, also shared the news with her 1.2 million Twitter followers by re-tweeting her husband's earlier post.
Fans have already started congratulating the pair on the birth, with fellow footballer Ashley Young saying; 'Congrats Wazza, great news. Hope little one is healthy and Coleen is too.'
@WayneRooney congrats Wazza, great news. Hope little one is healthy and Coleen is too â¤ï¸ð¤ð¾— Ashley Young (@youngy18) January 24, 2016
The day before his wife went into labour, Wayne had hinted that they were expecting soon, as he shared a photograph of his two older sons from May 2013 with the caption; 'Not long left until the new addition is here!'
Coleen had previously hinted that she would like a girl, telling Hello! magazine; 'I'd probably like another one – not too soon though.'
'I think a girl would complete the family but because the boys get on so well another boy would be just as nice.'
It is not known whether the gender was kept a surprise until the birth, as the pair previously said they would not be finding out.
The WAG has been teasing her social media followers over the past few months, posting outfits in both pink and blue.
The Liverpool-born pair were childhood sweethearts, having been together since they were 16 years old, but have been married since 2008 when they tied the knot in a lavish ceremony in Portofino, Italy.