‘Jersey Shore’ Preview: Snooki’s Alter Ego ‘Dren’ Comes Out At Nikki’s 30th Birthday

Dren is back! Nicole ‘Snooki’ Polizzi’s drunk alter ego has been kept at bay for quite some time, but a preview for the Sept. 8 episode of Jersey Shore reveals that she’s back in action. In the clip the gang is getting ready to celebrate Pauly D’s girlfriend, Nikki Hall’s, 30th birthday party. “A 30th birthday is a big deal,” Pauly gushes. “They’re a really big milestone, so it…