Has America's favorite cheerleader gone goth? Former Heroes star Hayden Panettiere surrendered to the dark side during a trip to London's Boujis Nightclub with her boyfriend, boxer Wladimir Klitschko, on Monday night, sporting black nail polish, a black neck adornment, black pants and a matching black leather jacket—an odd choice in itself, for a devoted animal lover such as Panettiere. What do you think of Hayden's edgy look? Let us know in the comments section after checking out the pics in the gallery. And make sure to pop in at Paparazzi-Razzi for more pics of your favorite celebrities o...