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

Actress Charlize Theron walks past reporters as she arrives on the red carpet for the annual White House Correspondents' Association Dinner at the Washington Hilton in Washington, April 28, 2012. [Photo/Agencies]

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