(Cover) - EN Showbiz - Snooki threw a surprise engagement party for her co-star JWoww over the weekend.

The Jersey Shore girls are currently starring in their own spin-off show, Snooki & JWoww.

JWoww was thrilled when boyfriend Roger Mathews proposed to her during a skydiving session on the show, and Snooki decided to celebrate the impending nuptials with a bash at the home they are sharing in New Jersey.

Snooki invited all her Jersey Shore co-stars to attend on Friday, apart from Mike Sorrentino, reports the New York Daily News' Confidenti@l column.

The publication also claims that JWoww's castmates are far more supportive of her engagement than they were of Snooki's.

Snooki's boyfriend Jionni LaValle proposed earlier this year and the pair have a baby son, Lorenzo, together.

When her Jersey Shore co-star Vinny Guadagnino heard about the engagement, he told Snooki she would "get divorced soon anyway."

However, the contrasting reaction to JWoww's engagement hasn't affected her friendship with Snooki. Insiders have rubbished claims they have been feuding while shooting the second season of their show.

"They are not fighting at all," a source told Confidenti@l. "Things are great. They have never been better." (C) Cover Media