The couple were also joined by Tarek's daughter Taylor, 13, and son Brayden, 8, for the family day out
On Wednesday, Heather, 36, took to Instagram to share some adorable photos of their family outing to Disneyland where they celebrated the special occasion.
"When the 5 of us try and take a photo together, you already know it’s going to be chaos 🙈 Sun in our eyes, bad lighting, kids getting antsy… the struggle is real 🤪," Heather wrote alongside a carousel of images from the day.
"But we had so much fun celebrating Tristan’s 1st birthday at Disneyland!!" the Selling Sunset alum added. "It was so fun being there as a family and seeing Tristan’s face light up at all the rides was the cutest thing Happiest place on earth for good reason 🤍🤍."
Heather and Taylor wore matching beige Mickey Mouse sweaters for the outing, while Tarek and Brayden twinned in black versions of the top. Meanwhile, The Flipping El Moussas stars dressed little Tristan in a gray Mickey Mouse sweater.
The family posed for a few sweet photos together during the trip, with one showing them standing in front of Sleeping Beauty's iconic castle.
Heather also shared another snap of herself and Tarek posing with Tristan in between them.
The Disneyland outing comes after Heather shared some cute photos from Tristan's underwater-themed first birthday party.
The carousel of photos posted on Instagram included one of the couple smiling at their little one as Heather held him while Tarek cradled the back of his head.
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This was followed by a shot of Tristan sitting in a highchair with his under the sea-themed cake in front of him. Meanwhile, other pictures showed Tristan's older siblings Taylor and Brayden, as well as snaps featuring blue, green and gold balloons, and 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.
"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," she continued.
"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."
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