Earlier today (14 March), Tom confirmed that Giovanna had given birth to their baby boy at 7pm last night.
The couple have now announced his (slightly wacky) name - and confirmed that they are not joking!
Tom tweeted: "For those asking, our son's name is Buzz Michelangelo Fletcher." He then added: "...and yes I'm being completely serious, my son is called Buzz :D."
Giovanna, who is the sister of TOWIE star Mario Falcone, also told fans: "So in love with our gorgeous little boy Buzz Michelangelo Fletcher."
Tom is an avid Disney fan, so it has been suggested that they named their baby boy after Toy Story character Buzz Lightyear.
...and yes I'm being completely serious, my son is called Buzz :D— tom fletcher (@tommcfly) March 14, 2014
And being Italian, did Giovanna choose the tot's middle name?
One star who has already got a sneak peek of Buzz is Emma Willis, who is married to Tom's McBusted bandmate Matt, and she thinks he looks like his uncle!
"@Mario_Falcone I think he looks like you!! X," she told him on Twitter. Mario replied: "Really?? I am seeing him later :)."
Celebrities who have welcomed babies in 2014:
Copyright: Rex Features WENN/Matthew Taylor/Daniel Deme/Josiah True/Matthre Taylor/Joe