The `Glee` actress is delighted with rumours that the 48-year-old Scottish singing sensation - who shot to fame after competing on UK TV programme `Britain`s Got Talent` in 2009 - is set for a cameo in the show because her rise to success is similar to that of the stars of the musical drama.
Asked about the speculation, Lea said: "Oh my God, I have no idea! It would be so incredible to singwith her.
"She had a hidden talent which was then discovered, which is what happened to so many of us from `Glee`. Look at Amber Riley and Chris Colfer - they`re incredible and thanks to `Glee` the world gets to see them.
"I think SusanBoyle is perfect. She`s a shoo-in."
As well as hoping Susan can appear on the show, Lea would be delighted if Madonna - whose music was the subject of a special episode last year - and Justin Timberlake were also offered roles.
She added in an interview with Britain`s LOOK magazine: "We all loved doing the Madonna show - it was one of my favourite episodes. We`re hoping to do a part two. Maybe Madonna could be the sex education teacher.
"Justin Timberlake would be great. He is perfect."