Heather Rae and Tarek El Moussa Throw Under the Sea-Themed First Birthday Party for Son Tristan — See Photos!

The 'Selling Sunset' alum and husband Tarek El Moussa enjoyed a special day with family and friends to celebrate their little guy

<p>Lisette Gatliff</p> Heather Rae and Tarek El Moussa with their son Tristan

Lisette Gatliff

Heather Rae and Tarek El Moussa with their son Tristan

Heather Rae and Tarek El Moussa's little guy is having fun under the sea!

On Monday, the couple shared a joint Instagram post featuring a carousel of photos from an underwater-themed party for son Tristan's first birthday. Heather, 36, carries her son and poses next to husband Tarek, 42, who cradles the back of their son's head in one sweet shot.

Tristan can be seen sitting next to his blue cake, which is decorated with seaweed, coral and goldfish. His older siblings Taylor, 13, and Brayden, 8 — who Tarek shares with ex-wife Christina Hall — were also at the party, which featured blue, green and gold balloons, as well as blue cupcakes.

"Tristan’s ONEder the sea 🌊 🐠🦈 🐳 birthday party was perfect in every way. Our hearts are so full. 🥹☺️," the proud mom wrote in her caption.

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<p>Lisette Gatliff</p> Tristan with his birthday cake

Lisette Gatliff

Tristan with his birthday cake

Related: Tarek and Heather Rae El Moussa Call Son Tristan the 'Best Addition' as They Celebrate His First Birthday

"Wanted to do a little roundup of some of our favorite moments from his party but also ICYMI- we originally had planned on throwing a bigger birthday for him & it got completely out of control and we ended up deciding to pivot and do a very intimate party at our own house."

"We really wanted to soak in every moment & not feel overwhelmed and it was extra special to just be surrounded by our family and a few friends to celebrate our sweet little love."

<p>Lisette Gatliff</p> Tristan with sister Taylor and brother Brayden

Lisette Gatliff

Tristan with sister Taylor and brother Brayden

At the end of January, the Flipping El Moussas stars celebrated their son Tristan as he turned one year old, sharing a gallery of photos to their Instagrams. In the snaps, Tarek rested Tristan on his lap, holding him upright while the little boy looked at the camera.

Heather lifted her son in another photo and captured her newly minted one-year-old as he crawled around on the ground.

<p>Lisette Gatliff</p> Tarek El Moussa with son Tristan

Lisette Gatliff

Tarek El Moussa with son Tristan

"Happy birthday Tristan Jay!!! Our sweet little bear 🧸 is officially 1 year old today 🥹 The best addition to our family of five and a light that brightens all of our days with his endless smiles, loudest belly giggles, and perfect blue eyes 🤍," they wrote in their caption.

"I can’t believe we have 1 teenager, 1 pre-teen, and a toddler in our home… soaking in every single moment, big and little, because where does the time go?!"

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