The proud 24-year-old mother is showing off little Dominic Lorenzo LaValle on the cover of this week's People Magazine.
Polizzi and fiancee Jionni LaValle welcomed Lorenzo just before 3 a.m. on Sunday, Aug. 26 at Saint Barnabas Medical Center in Livingston, New Jersey.
Confirmation of the early morning delivery came in a statement from rep Stacey Wechsler:
"The world just got another Guido!!! Lorenzo Dominic LaValle has entered the world weighing 6lbs, 5oz. Nicole, Jionni & Enzo are doing great!"
The same day, Snooki tweeted about how much she is already enjoying parenthood.
"Being a mom is an amazing feeling!!! I love my little man to death! Jionni is such a cute dad," she wrote. "I am SO IN LOVE with my son Lorenzo Dominic."
Snooki's "Jersey Shore" castmates offered their congratulations via Twitter.
"I Love It This Time A Yearrr When Baby Lorenzo's Here !!!!! Congrats @snooki And @JLaValle !!! #BabyBlowout," Paul "DJ Pauly D" DelVecchio wrote.
Added Mike "The Situation" Sorrentino: "Congrats to Nicole and jionni on their healthy baby boy! All the best!"
Jenni "JWoww" Farley, who stars with Snooki in the Jersey Shore spin-off show Snooki & JWoww, wrote: "So proud of @snooki and @JLaValle! Lorenzo is the cutest baby I ever seen. Love him already."
News that Polizzi and LaValle were expecting was officially announced in March. Polizzi revealed in May that she was having a boy.
Fans who want to know about the last months of Snooki's pregnancy can tune in to the next season of MTV's "Jersey Shore," which the channel said will debut in October.
Snooki, one of TV's highest paid reality stars, shared much of the early months of the pregnancy with the curious world on her MTV spinoff, "Snooki & JWoww."