A US gay magazine is calling for Superman to come out.

The Advocate is so convinced that the Man of Steel is gay that they have a made a whole feature titled How Gay is Superman.

The publication has created speculation in internet chat rooms and message boards on the preferences of Daily Planet reporter Clark Kent.

Gay fans are so convinced by the news that they are urging film and comic book makers to write his sexuality into future storylines.

Brandon Routh, who plays Superman in this summer’s blockbuster movie, was last month voted the second most exciting gay icon behind hotel heiress Paris Hilton.