But, never one to shy away from a funny video, the father-of-two decided to film the announcement 'live from the delivery room' as his wife gave birth.
The 30 year old uploaded the hilarious video to YouTube, showing his wife Giovanna Fletcher 'in labour' while he talks to the Penguin Book Conference over Skype.
Uploaded on 29th February, the video has already been watched over 160k times despite neither of his adorable children even being seen on film.
The caption confirms; 'I was meant to announce my new book at the Penguin Random House sales conference but my wife went into labour, so...'
The children's author explains he has 'rather got his hands full at a London hospital' as Giovanna gives him evil glares in the background.
As many unhelpful husbands do, he adds; 'Honey you're doing such a good job' then asks her to keep the noise down while unveiling the title of his first solo writing-venture, The Christmasauras.
He then asks the midwife to pass him his ukulele so that he can sing a song while his wife angrily huffs and puffs in the background.
Tom began his second career, after joining McFly back in 2003, four years ago when he co-authored 'The Dinosaur That Pooped Christmas' with ex bandmate Dougie Poynter.
The London-born star first met his wife at the age of 13 when they both attended music school together in the capital, they were finally engaged in April 2011 and married in May 2012.
Giovanna, who is the sister of reality TV star Mario Falcone from TOWIE, also loves appearing in Tom's YouTube videos – with both of her pregnancy announcements being broadcast.
Their second and most recent child, Buddy Bob, was born on 16th February this year, with a series of videos called 'Player 2'.
This year Tom has also been a judge alongside Great British Bake Off winner Nadiya Hussain on ITV Lorraine's competition to find a new children's author.