Actress Rosario Dawson arrives at the an

Actress Rosario Dawson arrives at the annual White House Correspondents' Association dinner in Washington on April 28, 2012. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/GettyImages)

Actress Rosario Dawson arrives at the an

Actress Rosario Dawson arrives at the annual White House Correspondents' Association dinner in Washington on April 28, 2012. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/GettyImages)

2012 White House Correspondents' Association Dinner - Arrivals

(Photo credit should read NICHOLAS KAMM/AFP/GettyImages)

attends the 98th Annual White House Correspondents' Association Dinner at the Washington Hilton on April 28, 2012 in Washington, DC.

2012 White House Correspondents' Association Dinner - Arrivals

(Photo credit should read NICHOLAS KAMM/AFP/GettyImages)

attends the 98th Annual White House Correspondents' Association Dinner at the Washington Hilton on April 28, 2012 in Washington, DC.

2012 White House Correspondents' Association Dinner - Arrivals

(Photo credit should read NICHOLAS KAMM/AFP/GettyImages)

attends the 98th Annual White House Correspondents' Association Dinner at the Washington Hilton on April 28, 2012 in Washington, DC.

2012 White House Correspondents' Association Dinner - Arrivals

(Photo credit should read NICHOLAS KAMM/AFP/GettyImages)

attends the 98th Annual White House Correspondents' Association Dinner at the Washington Hilton on April 28, 2012 in Washington, DC.

2012 White House Correspondents' Association Dinner - Arrivals

(Photo credit should read NICHOLAS KAMM/AFP/GettyImages)

attends the 98th Annual White House Correspondents' Association Dinner at the Washington Hilton on April 28, 2012 in Washington, DC.

2012 White House Correspondents' Association Dinner - Arrivals

(Photo credit should read NICHOLAS KAMM/AFP/GettyImages)

attends the 98th Annual White House Correspondents' Association Dinner at the Washington Hilton on April 28, 2012 in Washington, DC.