It’s T-shirt time again! JerseyShore cast members Nicole “Snooki” Polizzi, 30, Jenni “JWoww” Farley, 32, Paul “DJ Pauly D” DelVecchio, 37, Vinny Guadagnino, 30, Deena Cortese, 31, Ronnie Ortiz-Magro, 32, and Mike “The Situation” Sorrentino, 35, are hitting the clubs again in MTV’s Jersey Shore: Family Vacation. But a lot has changed since we first met the dysfunctional gang of guidos and guidettes in 2009: Deena wed Christopher Buckner last year, The Situation has been sober for two years and is engaged to longtime girlfriend Lauren Pesce — and some of them are parents! Snooki has Lorenzo, 5, and Giovanna, 3, with husband Jionni LaValle; JWoww has Meilani, 3, and Greyson, 2, with husband Roger Mathews; Pauly D has Amabella, 5, with Amanda Markert; and Ronnie just became a dad…