Sienna Miller and Mena Suvari caused quite a stir at the Ziegfeld Theatre in New York when they turned out for the premiere of their latest film. The two actresses, who sailed up the red carpet arm-in-arm, were both glowing with pride as they presented their much-talked about drama Factory Girl.

“It’s a dream role,” she said at the screening. “It’s an honour to play her. I researched it for about a year – I empathised with her so much.