Tia Booth‘s family is growing!

The former Bachelor contestant, 33, revealed in an adorable Instagram video on Thursday, Aug. 22, that she and her husband Taylor Mock are expecting their second baby together. The couple, who tied the knot in November 2023, are also parents to 20-month-old Tatum.

In the video, Tatum is wearing a white, knit sweater that reads “baby bro” in pink. He runs around the grass toward his parents, who are sitting together on a picnic blanket, before heading for the camera.

“BIG BROTHER TATUM🥹🥹,” the two captioned the video, which is set to the song “Everything We Need” by Wilfred.

“Omg omg!!!! congratulations!!!!” Natalie Joy, former Bachelor star Nick Viall’s wife, commented on the post.

Never miss a story — sign up for PEOPLE’s free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

The couple first met at a going-away party for one of Booth’s friends. They struck up a friendship that eventually turned into more when Mock admitted he had a crush on Booth. Befitting Booth’s Bachelor roots, Mock proposed in April 2022 during a Bachelor Live show in Atlanta.

In December 2022, Booth and Mock revealed on Instagram that they had welcomed their first baby together. In the post, which featured audio recordings, they shared that their son Tatum was born on Tuesday, Dec. 7, at 6:13 a.m. They also both referred to the moment as the “best day of our lives.”

Ahead of their wedding day last year, the couple told PEOPLE how they are excitedly looking ahead to the future and hope to continue expanding their family.

“The next chapter looks like more babies ASAP! Grow businesses, grow as a team. We’re also getting a puppy to keep things interesting,” Booth said. “We’re pumped.”