Pregnant \"Jersey Shore\" cast member Nicole \"Snooki\" Polizzi will appear in the upcoming sixth season of the reality show, MTV announced Monday. Polizzi, 24, is known for her hard-partying ways. She is engaged to Jionni LaValle, her boyfriend of more than a year, and confirmed last week she is pregnant with their first child. \"While things will definitely be a little different this time when they hit the boardwalk, their trademark hilarity and family dysfunction will remain the same,\" MTV said in a statement announcing the show\'s renewal. Other members of the show\'s ensemble who will return include Jennifer \"JWoww\" Farley, Michael \"The Situation\" Sorrentino, Paul \"Pauly D\" DelVecchio, Ronnie Ortiz-Magro and Samantha \"Sweetheart\" Giancola.