The Bachelor couple Sean Lowe and Catherine Giudici have welcomed their second child into the world!

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Sean, 34, announced the birth of the couple's baby boy via Twitter on Friday.

"We're having a baby today!" Sean wrote. "When the nurse at the front desk asked for our insurance card, I told her I also had a half off coupon and now I get to sit in the waiting room during the birth!"

RELATED LINK: 'THE BACHELOR' FRANCHISE COUPLES NOW: WHO IS STILL TOGETHER?? (PHOTOS)

Catherine, 31, also revealed the big news of her son's arrival on Instagram.

"Introducing Samuel Thomas' little brother, Isaiah Hendrix," the beautiful mother captioned a photo of herself holding the baby.

On Sunday, Sean posted a video and a couple of sweet photos of little Samuel -- who turns two in July this year-- meeting and kissing his sibling.

Sean and Catherine just celebrated four years of marriage back in January 2018.

Sean and Catherine fell in love and got engaged on The Bachelor's seventeenth-season finale in 2013. 

The couple revealed Catherine was pregnant with Baby No. 2 in November 2017. They decided to remain in the dark, however, about the baby's gender until his or her birth so they could be surprised.

"We are so thrilled to announce that we are expecting our second child! We consider ourselves so blessed to have Samuel in our lives and we are already thanking God for the newest edition to our family who should be arriving in late May," the pair told Us Weekly at the time.

"We are so thankful to everyone who has followed our little family and encouraged us along the way!"
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After Sean completed a stint on Dancing with the Stars' sixteenth season, he and Catherine tied the knot in January 2014 for a live ABC television special.

They both subsequently appeared on Celebrity Wife Swap and Marriage Boot Camp before Samuel was born in Summer 2016.

RELATED LINK: 'THE BACHELOR' COUPLES NOW: WHO DID 'THE BACHELOR' STARS AND THEIR BACHELORETTE PICKS ACTUALLY END UP WITH? (PHOTOS) 

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