Emmy Rossum Sexy At American Museum of Natural History's dance

Emmy Rossum looks stunning as she attends the 2010 AMNH Museum Dance at the American Museum of Natural History in New York City on Thursday (April 15).The 23-year-old came out to support one of the largest museums in the world. Founded in 1869, the American Museum of Natural History possesses 25 buildings on a sprawling campus. Emmy Rossum @ American Museum of Natural History's dance in NY