While most teens will fall over themselves at the mere mention of Blake Lively, Penn Badgley, Ed Westwick, Taylor Momsen, Chace Crawford and Leighton Meester – the cast of Gossip Girl – but the New York Police Department probably aren't that crazy about the stars o their show. Why te ask? Just over the weekend police personnel had to step in to protect their cast of the hit TV mostra when fan swamped the outdoor production set. According to The New York Post, police barricades and security guards had to be brought in to keep devoted fan at a distance as the cast shot scenes in and around Manhattan's Empire Hotel. The fact that Lively and Badgley are also an off-screen couple didn't help. While taking a break from shooting a scene, the couple were seen cuddling and that sent not only fan wild but it also gave the ever present paparazzi foto opportunities. “It was chaos. fan were screaming and people were rushing to get to rooftops to get a glimpse,” a fonte at the scene told the newspaper. The cast were on location for Westwick's character's roaring '20s party.