Former Real Madrid captain Marcelo is delighted for son Enzo Alves after his call-up to the Spain U15 squad.
Enzo, 13, also qualifies for Brazil, but after his exploits with Real Madrid's academy team he will have a first taste of international football with Spain.
Alongside the images on Instagram, he wrote: "Start a new challenge. Let's go for it."
Marcelo, who joined Fluiminense this year after last summer's Real Madrid exit, shared his delight for his son.
The Brazil wing-back posted a sun emoji in reply to the post, and expressed his "infinite pride".