"Jay Wolfe 8/26/19 19 in. 7 LBS 1oz," the Teen Mom: Young and Pregnant cast member captioned the Instagram album of her sweet newborn. "Welcome to the world little love."
Shortly after sharing the life-changing news, Lexi tweeted her appreciation for the well-wishes and explained why she did not disclose on social media that she was expanding her brood:
Now Baby Jay is here -- and sweet Tobias, who will be two next month, is a big brother! Offer your congratulations to the new family of four in the comments.