Meet the newest member of Bachelor Nation! Sean Lowe and Catherine Giudici, who met and fell in love on season 17 of The Bachelor, welcomed their second child, a baby boy, on Friday, May 18.

The proud new parents announced his birth on social media, with photos of themselves holding their newborn son. Giudici’s pic shows her in her hospital bed, cradling the little one in a printed baby blanket. “Introducing Samuel Thomas’ little brother, Isaiah Hendrix,” she captioned the Instagram post.

Lowe’s photo shows the former Bachelor looking down adoringly at his son. “Meet my boy Isaiah Hendrix,” he wrote on Twitter. “Thank you Lord. And thank you to everyone who has wished mama and baby well.”

Isaiah Hendrix joins big brother Samuel, who will celebrate his second birthday in July. Samuel helped his parents announce Giudici’s pregnancy last November, when Lowe posted a video of the toddler saying, “Babo” — his attempt at “baby” — and pointing to his mom’s stomach.

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It’s happening!

A post shared by Sean Lowe (@seanloweksu) on

Earlier on Friday, Lowe took to Twitter to tease the arrival of his second child, writing, “We’re having a baby today! 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!”

He also posted about the imminent arrival on Thursday. “After months of making jokes about Catherine’s pregnancy and the new baby, it just dawned on me we’re actually having a real human child tomorrow and I’ve decided I’m not ready for it,” he wrote, before getting in another joke about the birth. “Told Catherine I want to take one of those pictures where the dad is shirtless with the baby because he obviously works out a bunch and he wants everyone to know it, because that’s way more important than the child itself. She said maybe. I’m off to get a spray tan now.”

Congrats to the happy family! We’ll be expecting those shirtless pics any day now, Sean.

(photos via Steve Zak Photography/Getty Images)