Spencer and Heidi Pratt take a dip in the ocean and build sand castles with their son

Spencer and Heidi Pratt take a dip in the ocean and build sand castles with their son Gunner during a beach day

They have been doting parents since welcoming their son Gunner in October 2017. 

And Spencer and Heidi Pratt joined their three-year-old son at a beach in southern California on Monday. 

The famous couple from The Hills took a dip in the water and enjoyed building sand castles as they soaked up the sun. 

Family day: Spencer and Heidi Pratt joined their three-year-old son at a beach in southern California on Monday 

Heidi, 34, donned a casual look in a black tank top that she teamed with beige sweats and sneakers. 

The reality TV star tied her blonde hair up into a bun and shielded her eyes from the sun in dark rounded shades. 

She doted on their son who enjoyed the rocky beach area in a red baseball cap and adorable tropical blue swim trunks. 

Spencer, 37, took to the sand and building sand castles with Gunner as they ocean water washed up to them. 

Building: Spencer, 37, took to the sand and building sand castles with Gunner as they ocean water washed up to them

Building: Spencer, 37, took to the sand and building sand castles with Gunner as they ocean water washed up to them 

The Hills: New Beginnings star went shirtless as he wore brown and black camouflage shorts and only a necklace. 

It comes as Heidi and Spencer are gearing for season two of The Hills: New Beginnings as production is reportedly due to start sometime in October.

Producers of the upcoming season of the hit MTV show are currently flirting with the idea of keeping the cast under one roof for the shooting season which would last a few months. 

Shirtless: The Hills: New Beginnings star went shirtless as he wore brown and black camouflage shorts and only a necklace

Shirtless: The Hills: New Beginnings star went shirtless as he wore brown and black camouflage shorts and only a necklace 

Young love: The reality TV couple first met on the first installment of  The Hills back in 2007. The producers of the hit MTV show decided to bring the smash show back for a reboot with a slightly revamped cast

Young love: The reality TV couple first met on the first installment of  The Hills back in 2007. The producers of the hit MTV show decided to bring the smash show back for a reboot with a slightly revamped cast 

Though not confirmed, the idea to keep the cast in close quarters would liken the show to more of a Big Brother or Jersey Shore which is a different direction from the previous season. 

The new format would help with ease of production and would set the stage for added drama but with several cast members like Heidi and Spencer having young kids at home, it seems like a longshot.

Heidi and fellow reality star Spencer have been married since eloping in 2008.