By Stephen M. Silverman
Updated September 11, 2002 01:00 PM

Who said movie musicals are extinct?

In an attempt to cash in on its small-screen summer hit, 20th Century Fox is developing a big-screen version of the Fox TV pop-star smash “American Idol,” Variety reports.

The trade paper says “Idol” creator Simon Fuller and studio co-chairman Tom Rothman have both expressed a strong interest in developing such a movie, which has yet to get a final green light.

Still, Rothman reportedly told investors in Miami at a communications conference hosted by investment giant Morgan Stanley that there was a “good chance” that his studio would develop such a project.

Picking up on Rothman’s comment, Fuller issued a statement saying, “I’m very happy to extend my relationship with Fox and News Corp. I’m also looking forward to working closely with my brother, Kim Fuller, and repeating the success we had together with ‘Spice World.'”

The 1997 “Spice World,” starring the Spice Girls, was written by Kim Fuller, whose sporadic subsequent credits include the screenplay to a 2001 movie called “High Heels and Low Lifes,” starring Minnie Driver. Besides serving as executive producer of “American Idol,” Simon Fuller was the mastermind behind the Spice Girls and produced both “Spice World” and “Spice Girls: Live in Istanbul,” in 1997.

Simon Fuller, meanwhile, had already confirmed last week that he was developing a feature film for “Idol” winner Kelly Clarkson, 20, and runner-up Justin Guarini, 23, that would combine scripted adventures with improvised parts.