Columnist Robert Novak exposed Plame's agent identity, sparking an independent investigation that has already sent one reporter to jail and brought a White House official under indictment.
She and Wilson, an Iraq war critic, will be guests of ABC News, Editor & Publisher reported.
As in the past, attendees at the annual black-tie affair, to be held at the Washington Hilton on April 29 this year, often look for controversial visitors who might spark gossip around the open bar.
Other "outsider" guests include tennis star Anna Kornikova, rap star/actor Ludacris and James Denton of "Desperate Housewives."
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