Robbie Williams and Ayda Field have welcomed their fourth child via surrogate.
The former X Factor judges shocked fans as they announced they now had a new baby boy.
However, the couple had given no previous warning that he was on the way.
They have named him Beau Benedict Enthoven Williams.
According to the Mirror, the tot was born via the same "incredible" surrogate mother who gave birth to their daughter Coco.
Ayda shared the news with fans by posting a picture of the family's feet - with an additional pair belonging to their new baby boy.
She wrote in a post on Instagram: "Spot the difference...' On this Valentine's Day, we would like to celebrate love in the most awesome way... Beau Benedict Enthoven Williams.
"As with Coco, he is biologically ours, but born via our same incredible surrogate. We are so blessed to have our healthy son safely in our arms and are officially complete as a family.
"#happyvalentinesday #surprise #familyof6 #whodathunkitinthe90s The Williams Family xx."
