five-year-old son Julian Fuego.
The 38-year-old "Blurred Lines" hitmaker was seen spending time with his family at the beach during their boy's day out, reported People Magazine.
"Three Generations of Thickness! Haha. My favorite dudes," he captioned the family photo on Instagram.
The threesome have been soaking up the sun on the West Coast as Thickie had also shared a snapshot of his son snuggling up with a dog.
"Great day in California today! Love my NY friends!" he wrote.
The singer had earlier posted a candid picture of Alan and Julian together, writing, "My Pops and my Boy! Love u guys.