Celebrities attend White House Correspondents' Association Dinner

Barbara Walters arrives on the red carpet for the annual White House Correspondents' Association Dinner at the Washington Hilton in Washington, April 28, 2012. [Photo/Agencies]

Viola Davis walks on the red carpet for the annual White House Correspondents' Association Dinner at the Washington Hilton in Washington, April 28, 2012. [Photo/Agencies]