So sweet! Nicole "Snooki" Polizzi has changed so much since her days on Jersey Shore but the one thing that's changed her the most is that she's now a mommy! The reality TV star took to Instagram to share a touching tribute to her first child on his fifth birthday and she credited her son with having a positive effect on her.

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"Happy [fifth] birthday to my son who changed my life for the better," the 29-year-old wrote. "You are my world and I'm so proud to be your mommy! I remember when I first laid eyes on you and knew I would protect you with all of my being until the day I die. I'm writing this, he's gonna read this and say, 'Thanks, ma.' Stop growing and freaking me out!"

She shared an adorable side-by-side photo of Lorenzo from when he was a baby to a more recent picture and the adorable little boy even wore a T-shirt that said "Jerzday" — which was the term used to describe the day that his mom's show aired on MTV. Snooki dressed her son and her two-year-old daughter Giovanna up in the shirts to celebrate the Jersey Shore: Road Trip Reunion special that aired last week on E!

But since fans seemed to be let down because the reunion special was only 30 minutes long, Snooki told In Touch that the cast would be down to film another reunion. "Yeah, we are definitely open for us to do a full season of all of us together, of you know, of us just hanging out because it just felt good to be back together," she said. "We are all adults now. It was just so crazy for us to be together. We are the same delinquents that we were when we were 21. It was so fun."

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And fans won't have to wait very long! Snooki and her bestie Jenni "JWoww" Farley are heading back down the shore with their friend, former Mob Wives star Drita D'Avanzo for a Jersey Shore spin-off with the working title, Celebrity Shore.

Scroll through the gallery below to see Snooki's weight loss transformation!