Jennifer Lopez definitely wants to. She runs over to me at parties asking whether I've spoken to Ryan yet, because she'll 'do anything' to be on the show. She and her husband Marc Antony are obsessed with 'Glee', femalefirst.co.uk quoted Morrison as saying.
Other celebrities who have made guest appearances on the show so far include Britney Spears, Neil Patrick Harris and Gwyneth Paltrow.
