They recently became the first gay couple to be shortlisted for Celebrity Dad of the Year.
And Elton John and David Furnish showed off their fine parenting skills as they took baby Zachary on a trip to Venice.
The proud parents cuddled and fussed over their chubby-cheeked five-month-old as they travelled across the Italian city.
The happy family's European trip will also include a visit to Spain and Portugal.
Their new addition, who was born to a surrogate mother on Christmas Day 2010, will call 64-year-old Elton 'Daddy' and David, 48, 'Papa'.
And the fact that they don't know which of them is the child's biological father has not been an issue.
"Neither of us care," said David.
"He's our child. The important thing is that he's healthy and happy and loved."