Sienna hails late film director
Sienna Miller has paid tribute to her "sweet friend" George Hickenlooper, the late director who worked with her on Factory Girl.
She praised his work as "life-altering in the most beautiful way" and told of his generosity of spirit.
US film-maker Hickenlooper died at the weekend from a heart attack at the age of 47.
His films included documentaries Mayor Of The Sunset Strip and Emmy Award-winning Hearts Of Darkness which examined the making of Apocalypse Now.
Hickenlooper also directed Miller in the lead role for his biopic about Edie Sedgwick, the socialite friend of Andy Warhol.
In a statement, Sienna, 28, said: "There are people who make films for glory and recognition, and there are people who make films. George Hickenlooper was a lover of film.
"He understood that the medium needn't be manipulative, but appreciated, through his own experience, that it could be life-altering in the most beautiful way. He was generous of spirit. He asked for nothing and, as a result, received all.
"I have never felt more loved or appreciated as an actor and, as a result, have never been more honest in a film."
The actress, who has also featured in Layer Cake, Alfie and Stardust, continued: "George was childlike in his enthusiasm. I hope that others will learn that from this generosity of spirit creativity flows."
She added: "Rest in peace, my sweet friend."