Snooki's "Jersey Shore" co-stars congratulate new mom

Nicole "Snooki" Polizzi and Jionni LaValle visit Citi Field on July 23, 2012, in Queens, N.Y.

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(CBS News) Nicole "Snooki" Polizzi is getting a lot of love from her "Jersey Shore" co-stars after giving birth to a baby boy on Sunday.

The reality TV star and her fiance, Jionni LaValle, welcomed 6-pound, 5-ounce Lorenzo Dominic LaValle Sunday at Saint Barnabas Medical Center in Livingston, N.J., MTV announced.

Pictures: "Jersey Shore"

Her "Jersey Shore" pals are sending their best wishes to the pint-sized star and her new family:

JWoww tweeted: "So proud of @snooki and @JLaValle! Lorenzo is the cutest baby I ever seen. Love him already."

Ronnie Magro wrote: "Congratulations to @snooki !!! Luv ya baby sis! Remember breathe and push!!"

Pauly D tweeted: "I Love It This Time A Yearrr When Baby Lorenzo's Here !!!!! Congrats @snooki And @JLaValle !!! #BabyBlowout"

Samantha "Sammi" Giancola tweeted: "Congrats @snooki !!!!! So happy for you."

Vinny Guadagnino wrote: "I'm finally an uncle!!! Congrats @snooki and @JLaValle! Can't wait to meet #babylorenzo!"

Mike "The Situation" Sorrentino tweeted: "Congrats to Nicole and jionni on their healthy baby boy! All the best! @snooki"

As for Snooki, she appears to be head over heels over her newborn son, tweeting Monday morning that she had "hardly any sleep but SO worth it." Snooki, 24, also thanked her friends for their support, adding, "Lorenzo loves you guys already!"

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"Jersey Shore"