Paula Abdul will be one of many special guest stars appearing on American Idol’s season finale, the show’s last hurrah for judge Simon Cowell. Christina Aguilera is also definitely signed up for the event, though FOX is staying mum on other names which might be appearing.

The Wednesday show will also see an American Idol crowned, results which will be determined after contestants Crystal Bowersox and Lee DeWyze sing for our votes on Tuesday.

Get all the gossip, news and recaps right here - check out all our American Idol 9 posts.