Snooki's Jersey Shore co-star Ronnie Magro believes she has "grown up."

The 24-year-old star used to be known for her drinking and hard partying ways, but having recently announced she was pregnant and engaged to Jionni LaValle, Ronnie believes she is now a very different person.

"It's a different Snooki. She's doing really good. She's not drinking. She's got her act together and I'm really happy for her. Over night she's like this wild, crazy Snooki and now she's pregnant and engaged and growing up," he said.

Not only has she given up drinking, but Ronnie claims Snooki - real name Nicole Polizzi - has become keen on healthy eating: "She said she's feeling good. Not too much morning sickness. She's actually eating healthy. The fact that she likes to have a good time has nothing to do with what kind of parent she's going to be. It's her life and whatever's going to make her happy at the end of the day."

However she may not have grown up completely - fellow Jersey Shore star Pauly D recently revealed she wanted a DJ in the delivery room with her. "She told me she wants me to DJ the delivery room. I told her I'll just DJ the baby shower," he said.