"Hayes Alba Warren 12/31/17 Best gift to ring in the New Year!!" Jessica wrote, alongside a photo of her baby boy sleeping. "Cash and I feel so blessed. Haven and Honor are already obsessed with their new baby bro. 👶🏽💙 #familyof5"
Cash also shared an emotional post about his son, sharing a second photo of himself holding Hayes.
"Hayes Alba Warren: You sure know how to ring in the new year!" he wrote. "You showed up a few days early but we couldn’t be any happier. Your Mamma is the strongest woman I know ... you’re so lucky to have her by your side. You have two amazing sisters who already adore you and I know you’ll be thankful to have them guide the way."
"On your first day of life, I promise to love you, to cherish you, and to provide you with a sandbox full of dreams to explore. Welcome to the family my sweet baby Hayes! 12/31/2017."
Congratulations to the gorgeous family.