Igniting a project that has hovered in development for several years, Sigourney Weaver and Peter Cattaneo are set to team on the feature rendition of his Oscar-nominated short, “Dear Rosie,” for 20th Century Fox.

Weaver is set to star and produce the pic, in association with her Goat Cay Prods. film banner — which started developing the project soon after it received an Oscar nod in 1990.

Barnaby Thompson, who produced the original short, will produce the feature. Peter Morgan (“Martha, Meet Frank, Daniel and Lawrence”) is penning a rewrite of the screenplay.

Fox exec VP, Jorge Saralegui is overseeing the project for Tom Rothman’s film division. Weaver stars in Fox’s upcoming “Alien Resurrection” and the Cattaneo-directed “The Full Monty” is being distribbed by Fox Searchlight.

“Dear Rosie” is a comedy about a struggling writer who encounters tremendous overnight success upon publication of her self-help, diet book. However, she soon discovers that her good fortune is fleeting and her troubles are just beginning.

As a follow-up to his 11-minute short, Cattaneo directed “Loved Up,” which screened at the Sundance Film Festival in 1996. At that time, Cattaneo attracted the attention of Fox Searchlight prexy Lindsay Law, who agreed to finance “The Full Monty,” which brought Cattaneo back to Sundance this year.

Weaver is repped by Sam Cohn and Steve Dontanville of ICM.

Robert Newman and Amanda Davis of ICM brokered the deal on Cattaneo’s behalf.

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