The 33-year-old plays high school teacher Will Schuester in the hit musical TV show. "I'd love to see Adele. I don't think she should sing on the show ... I don't know what she would do but it would be fun to have her on the show," femalefirst.co.uk quoted Morrison as saying.
Gwyneth Paltrow, Lindsay Lohan and Britney Spears are the other stars who appeared on the show.