His model girlfriend, Jacqui Ainsley has given birth to a little boy.
Jacqui, 29, delivered the baby at London's Portland hospital at 11am yesterday, and she and Guy are said to be 'over the moon' with their new arrival.
The couple have not yet chosen a name for their little boy, who arrived by Caesarean section and was a few days early.
Guy already has an older son, Rocco, 11, from his marriage to Madonna. They divorced in 2008.
A source close to Guy and Jacqui told the Sun: 'Guy couldn't be prouder. He and Jacqui have spent months getting ready and can't wait to take the baby home.'