Tarek El Moussa Can't Believe Time Is 'Going So Fast' as Son Brayden Celebrates First Day of 3rd Grade

"How is our little Bray Bray already going into 3rd grade!!" El Moussa wrote on Instagram

Tarek El Moussa's son has officially entered third grade!

On Wednesday, Aug. 28, the HGTV star, 43, shared a photo on his Instagram of his son Brayden, 9, as he started his first day of third grade. Posing in front of a white balloon arch with yellow, white and blue streamers, Tarek had his arm around his son, who wore a light blue polo and navy khakis.

On the other side of Brayden, Tarek's wife Heather Rae El Moussa, 36, had a shoulder on her stepson, smiling as she wore big sunglasses and a black hat.

"How is our little Bray Bray already going into 3rd grade!! 😭 Parents..how is time going so fast!" Tarek wrote in his caption.

"We gotta slow it down because we absolutely adore this little guy. He’s sweet, charming and full of heart and we couldn’t be more proud!!"

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Related: Heather Rae El Moussa Shares Look at Stepson Brayden's Shark-Themed 9th Birthday Party: 'Too Cute'

Tarek shares his son Brayden and his daughter Taylor, 13, with ex-wife Christina Hall. He shares his son Tristan, 18 months, with Heather Rae.

Hall also joined for the back-to-school photos, snapping a picture with Brayden in front of the balloon arch, which she later posted to her Instagram Stories.

Earlier this month, Heather Rae gave fans a behind-the-scenes look at Brayden's shark-themed celebration.

Documenting the gathering on her Instagram Stories, Heather Rae shared a peek at "Bray's shark-themed party," with images showing the deep-sea decor and snaps the preteen took with his dad.

Kicking off the birthday snaps, there was a picture of a sign that guests saw when they walked into Brayden's gathering, which read, "Welcome to the shark party."

From there, she showed off a "too cute" table featuring a blow-up shark, shark gummies, a blue place mat and some shark-themed cups, bracelets and glasses. A sign reading, "Swim with the sharks," also sat on the table.

At the end of July, Heather Rae and Tarek brought their family to the Caribbean, sharing photos on Instagram. On her Instagram Stories, Heather Rae posted a photo of herself posing with Tarek and their three kids in front of a plane on the runway at the start of their trip.

“Caribbean bound 🌴🌊✈️” she wrote over the shot, tagging her husband.

Heather Rae next shared a sweet photo of herself sitting with her baby boy fast asleep on the plane. “Snuggle buddy ✈️💤,” the Selling Sunset alum captioned the post.

The toddler was later shown awake and sitting up on the plane, “watching his show 😊,” wrote Heather Rae as Tristan sported cute bear pajamas and a pair of headphones. 

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