Bradley Cooper gained 20 kilos for "American Sniper"

Sensual Actor Bradley Cooper had to climb 20 kilos for his latest role in Clint Eastwood's "American Sniper".

It recently came to light that the sensual Actor Bradley Cooper had to undergo a rigorous diet for his latest film, American Sniper.

The winner of the SAG Awards for his role in "American Hustle" had to climb 20 kilos to play Chris Kyle in the recent film from director Clint Eastwood.

"He ate every 55 minutes or something, about 8000 calories a day," Jason Hall, screenwriter and producer of the film directed by Clint Eastwood, said to People magazine.

"Bradley used his own coach. I think he trained four hours a day. I wanted to get it naturally, did not want to use hormones, steroids or anything. It was very disciplined and coach where it was carried out," said Hall.

As recalled, "The Sniper" is nominated for six Oscars, including Best Picture, Best Actor and Best Adapted Screenplay awards.