Hours after CBS announced on Tuesday that Lindsay Lohan would appear on the “Late Show With David Letterman” tonight to present the Top Ten list, Lohan tweeted: “I am NOT going to be doing David Letterman,

I’m not sure how this happened, but I am sorry for the confusion...” Yesterday, a spokesman for Letterman’s production company acknowledged that “Late Show” had been duped. “We made a mistake,” said Worldwide Pants’ Tom Keaney in a statement. “Someone purporting to be a friend of Lindsay’s reached out to the show … allegedly on her behalf, and booked her to appear.” Lindsay’s father, Michael, has since come forward as the source behind the idea, telling TMZ that he thought up the plan after Letterman made a joke about Lindsay.