Hilary Duff knows how to Stay Cool

In the new Polish brothers comedy…

Despite the shadow of an actors’ strike drawing closer, some films are still finding casts. Take the Polish brothers – that’d be Mark and Michael, who most recently made The Astronaut Famer – who have been rounding up thesps for their new comedy Stay Cool.

Hilary Duff is the latest to sign on to a plot which already includes Winona Ryder, Sean Astin, Chevy Chase and Jon Cryer which sees a famous author (Mark Polish) returning to his home high school to deliver a commencement address. Trouble is, he’s facing attention from an unrequited old crush (Ryder) and a sexy senior (Duff), who invites him to the prom.

The Hollywood Reporter is looking for its cap and gown .