Last night Nicky Hilton, Kellan Lutz, Jamie Lynn Sigler, Lance Bass, Brittany Snow, Ryan Rottman, Rose Mcgowan, Stephanie Pratt, and Jessica Stroup came out to celebrate the birthday of Neverwood High’s Carlos Lopez , presented by Armani Exchange, at Bar 210 in Beverly Hills with Samantha Ronson behind the turntables. The room was outfitted in “chainsaw chic” decor and stars dressed to theme of American Psycho