McCain, who said she still plans to attend the event, took to Twitter to voice her frustration over the invitation for Lohan, who has had a checkered past, The Washington Post reported Friday.
"Let me get this straight Greta Van [Susteren] is bringing Lindsay Lohan to the WHC Dinner but has a moral offense to Louie C.K?" she wrote.
McCain was referring to Van Susteren's blog post last month in which she refused to attend the Radio and Television Correspondents' Association Dinner because they hired "the pig, Louis C.K., to be their headliner." Van Susteren took offense to jokes Louis C.K. had made at the expense of Sarah Palin's son Trig, who has Down syndrome.
Meanwhile, Lohan missed her Friday afternoon flight from Los Angeles to Washington, sparking concerns the actress would be unable to attend the event, E! Online reported. She was spotted boarding a red-eye flight, giving her plenty of time to make the Saturday evening dinner.
Lohan "changed her flight; simple as that. No issues [and] she is looking forward to the dinner," her representative told E!