When Oprah Winfrey co-hosts the Costume Institute Gala benefit to celebrate the opening of American Woman: Fashioning a National Identity exhibit held Monday at The Metropolitan Museum of Art, she pulled all the biggest names into the ball. Although Lady Gaga shies away from the swelteringly hot red carpet — and Kristen Stewart doesn't seem enchanted by the glamour — couples like Jessica Biel and Justin Timberlake, Gwen Stefani and ... Read More >>