Despite playing a scowling sister in her new dramedy The Family Stone, Rachel McAdams is all smiles at the film’s New York City screening. The back-to-blond Canadian-born actress, who was propelled into the spotlight in 2004 when both of the films she was featured in—Mean Girls and The Notebook—became instant hits, is bold and sexy in this body-hugging bright purple dress with lace hem detail by Dolce & Gabbana and complementing black pumps.

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