After Jennifer Lawrence [1] shut down the Oscars on Sunday night with her insanely gorgeous smile [2] (and dress), the actress attended Vanity Fair's afterparty looking like a million dollars. Jennifer, who lost the best actress award to Brie Larson, hit the red carpet [3] in a sexy, black, two-piece dress [4] that showed some major skin. Despite not winning the coveted gold statue, Jen looked as happy as ever while posing for photos with her Joy director David O. Russell. Keep reading to see more of her big night, then check out her appearance at the Women in Film pre-Oscar bash [5] last week.