Dax Shepard and Kristen Bell at the Hit and Run Premiere

It was a star-studded red carpet at last night's premiere of Hit and Run at Regal Cinemas in downtown LA. Dax Shepard, who wrote and directed the film, arrived in style with his leading lady, and fiancée, Kristen Bell, by his side. Kristen rocked a black satin jumpsuit, while Bradley Cooper sported a sexy leather jacket. The stars all took time to sign autographs for fans who were lining the streets before joining castmates Jason Bateman, Michael Rosenbaum, Tom Arnold, Ryan Hansen, and Joy Bryant for group photos. It looked like they had a great time filming since their red carpet reunion was filled with plenty of laughter. We asked the stars how Dax stacked up as a director and Ryan jokingly rated him an 8.5, saying, "He's got some work to do," while Bradley simply said, "He's awesome; he's incredible." Bradley also mentioned he'd love to try his hand at directing soon, too.