The friends and their families are on a summer vacation in the south of France

By Tim Nudd
Updated August 02, 2012 11:45 AM

Kids, sun, the south of France – a joint family vacation in Europe seems to be going swimmingly for Elton John and Neil Patrick Harris.

The singer, 65, and the actor, 39, are pictured with their families – John’s partner David Furnish and son Zachary, and Harris’s partner David Burtka and twins Gideon and Harper – in this gleeful shot, taken Thursday in Saint-Tropez, France.

Teaming up for a holiday seems like the perfect idea for these couples, given the ages of their kids.

Gideon and Harper will turn 2 in October, while Zachary is just a few months younger: his birthday is Christmas Day.

A summer visit to Saint-Tropez is becoming a tradition for these families. They spent time at the same club in the resort town right around the same time last year.