Sean and Catherine Lowe's Son Samuel Adorably Sprints Down the Aisle as a Ring Bearer -- Watch!

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Alberto E. Rodriguez/Getty Images

The lovebirds shared a series of pics and videos via Instagram on Sunday.

Sean Lowe and Catherine Giudici's 1-year-old son was the center of attention over the weekend!

The former Bachelor stars attended a wedding for their friends, Andrew and Steph Underwood, on Sunday, where their first child, Samuel, was a ring bearer. Clad in an adorable black tuxedo and bow tie, Sean's mini-me stole the show during the ceremony, held at Perkins Chapel at Southern Methodist University in Dallas, Texas.

According to a series of tweets and videos shared by the couple via Instagram, Samuel "sprinted down the aisle" in "record time." Obviously, looking real good while doing it.

"Y’all asked for it and here it is. My man made it down the aisle in record time," Sean, 34, said. "If you listen closely, he says 'Dada' right before taking off because he saw me at the end of the aisle (You can also hear mama giggling in the background). Kids are cheap entertainment."

And it looks like all of Samuel's energy came from the snacks a sweet girl around his same age gave him before the nuptials. "NO ONE WAKE ME FROM THIS DREAM," Catherine, 31, captioned the video of the kids sharing a precious moment together. 

Catherine is currently expecting her second child with Sean, and had no problem flaunting her adorable baby bump at the ceremony in a baby pink dress. "Cheers to The Underwoods!" she captioned a pic of her and Sean posing with the newlyweds. "#underwoodforthenguyen."

A day earlier, Sean couldn't help but gush over his stunning wife, writing: "She looking so fine I might knock her up all over again."

See more pics and videos from the wedding below:

Back in December, ET caught up with Sean and Catherine shortly after they announced they were expecting their second child, and the two revealed that they were already thinking about expanding their family even more -- and would like to adopt.

"We haven’t begun the process or connected with any social workers here domestically yet, but it’s something we’re going to do and I imagine we’ll probably start those conversations relatively soon," Sean said at the time. "Maybe the next year or so."

As for baby no. 2, Sean and Catherine told ET that they have already narrowed possible names down to a list of five or six. They're both male and female names, as they don't plan to find out the gender before Catherine gives birth. But Sean does have a prediction: "I'm thinking [it's a] boy ... I do just have this gut feeling!"

Hear more from the exclusive interview in the video below!

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