Fri Nov 6, 7:16 PM

LOS ANGELES, Calif. -- Robert Pattinson doesn't need to show his six-pack, the star joked with Access Hollywood's Shaun Robinson at the 'New Moon' junket in Los Angeles on Friday.'I don't walk around with my shirt off all the time!' he joked, poking fun at the often bare-chested 'New Moon' wolf pack. 'It's like driving a fancy car - you're insecure about something.'