Jungle veterans such as David Gest and Phil Tufnell are to take part in an I'm A Celebrity special for Who Wants To Be A Millionaire?.
The programme will be screened by ITV1 days before the latest batch of stars are dropped into their camp in Australia to do battle with creepy crawlies and bushtucker trials.
Other stars who will face question-master Chris Tarrant on November 9 include husband and wife duo Vic Reeves and Nancy Sorrell, Jennie Bond and comedian Joe Pasquale.
Joe said he was nervous about the show being broadcast live: "I need to make sure I don't swear if we lose the money."
Each of the contestants is taking part to win money for a chosen charity.