More stars have jumped on the bandwagon in support of oddball ‘X Factor’ act Wagner.

Katy Perry and Justin Bieber have both expressed their wishes for the 54-year-old Brazilian singer to win the talent competition.

Justin said to The Sun: “I know he isn't the best singer, but the public want him there. The judges should chill out a bit”

Katy Perry added her voice as well, saying: "He's fun. He's taking the criticism the judges give him really well. The public are crazy for him."

The controversial Wagner has also revealed that he will be performing a cover of Radiohead’s hit ‘Creep’ this Saturday (November 27).

Watch Wagner performing a mash-up of Beatles hits from last week, below: