Heather Rae El Moussa gives birth to her first baby with Tarek El Moussa

Heather Rae and Tarek El Moussa officially welcomed their first child together, a baby boy, on Jan. 31. They shared the news on Feb. 2 along with a photo of the little one in their arms.

"Our baby boy is here," the couple wrote on Instagram. "Mama & baby are happy, healthy, tired but doing well. Our hearts are so happy."

Their son is their first child together, and baby No. 3 for Tarek, who shares daughter Taylor, 12, and son Brayden, 7, with his ex-wife Christina Haack.

"Becoming a father for the third time is just as exciting as it was the first time. Our baby boy is doing amazing and Heather was a rockstar during labor," Tarek told Us Weekly. "I don't think I've ever seen Tay and Bray as happy as they were when they met their little brother."

He continued by noting, "We are on cloud 9 and soaking in all of the snuggles and bonding with our little guy as an official family of 5...My heart has grown even bigger and I'm feeling like the luckiest guy on the planet."