For the LA premiere of Sherlock Holmes: A Game of Shadows, Rachel McAdams donned a silver metallic Marchesa gown with a plunging low back. We love the idea of making a simple silhouette fresh and modern by opting for one in a cool, textured print. A silvery, mixed-materials frock is a festive alternative to your go-to red party dress and is also perfect for watching the ball drop on New Year's Eve. She finished the look with pretty diamond earrings and pinky ring by Jacqueline Nerguizian. Take a look at Rachel McAdams's perfect party look!