Clint Eastwood brought the big chill to the set of his new J. Edgar Hoover movie - to keep his actors cool underneath their heavy wardrobe and prosthetics.

Co-star Miles Fisher admits the set was like an ice hockey arena, so that stars like Leonardo DiCaprio, who plays Hoover, could feel comfortable.

Fisher tells, "All of that make-up and all of the cushioning and everything under the wardrobe is really, really hot. It was kind of like when you go to a hockey game and it's so cold in the arena because of the ice. That's how it felt on the soundstage.

"It's so much make-up. I think Leo was there for six hours each time, and they had to keep the set really cold."