The new dad took to Twitter today to share the news that his wife Chloe gave birth to a 6lb 15oz baby boy on Friday, September 19.
The 'proud daddy' hasn't yet shared a photo of his son, but he says he looks just like his mum and has 'a little nose' and 'lots of hair'.
JB is the third member of JLS to become a father. His bandmate Marvin Humes has a 16-month-old daughter, Alaia, and Oritsé Williams' girlfriend Aj Azari gave birth to his first child just four weeks ago.
Earlier today, AJ Azari posted a picture on Instagram that shows JB and Chloe how they'll be feeling a month down the line, after their first dose of sleepless nights.
She captioned the photo: "Caught sleepin hahaha!! #Tired #NoSleep every nap helps lol! #MessyHurrrDontCuurrr!!! Love this lil dude xxxx"
JB is used to early mornings as following JLS's split in April 2013, he started running a working farm!
He and Chloe married in Scotland in May after meeting on the set of the X Factor five years ago.
Chloe, who has danced for artists such as Beyoncé and Jessie J, was working as a backing dancer during the fifth series of the show, when JLS finished second to Alexandra Burke.
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