Call it Jersey Shore plus one more.

Snooki has made it official. The hard partying Jersey girl appears on the cover of US Weekly confirming the not-so-surprising news that she's 15 weeks pregnant and engaged to boyfriend Jionni LaValle.

After months of denying her pregnancy, the 24-year-old reality starlet told US why she lied to the media.

"I wanted to make sure the baby is okay," says Nicole "Snooki" Polizzi. "Things can go wrong, like a miscarriage. It was my business, and I wasn't ready to tell."

Snooki believes the pregnancy was a "happy accident," but panicked after knocking back a few drinks over the holidays. "I was worried," she admits. "It was New Year's Eve and we were in Vegas, so I did go crazy."

The two, who have been dating for a year and a half, are already having a difference of opinion on parenting. If they have a girl, LaValle told the magazine, "she is not dating until she is 18." But Snooki would give her daughter a lot more freedom: "I'm letting her date," she says. "I started dating at 13."

Tags: Snooki