Snooki and her fiancé Jionni LaValle welcomed their son Lorenzo Dominic LaValle in Livingston, NJ on Sunday (August 26) and tweeted later in the day that the whole family is "doing great".
JWoww took to Twitter as well to share her joy at baby Lorenzo's arrival.
"So proud of Snooki and Jionni LaValle… Lorenzo is the cutest baby I've ever seen. Love him already," she wrote on Sunday.
Jersey Shore's Pauly D also declared that he is looking forward to celebrating with new parents Snooki and LaValle.
"I Love It This Time A Yearrr When Baby Lorenzo's Here !!!!! Congrats @snooki And @JLaValle !!! #BabyBlowout" he quipped.
Pauly D previously suggested that "the first Jersey Shore baby" is a major milestone for the cast.
"You want to know why [I'm real excited]? I love babies! I love everything about them, when they're not yours. So I'll take care of it, spoil it and then when it's crying, give it back to Snooki," the reality star joked.
Jersey Shore returns for a sixth season on October 4 on MTV in the US.