ACTRESS Sienna Miller ­revealed she could not wait to get back to work as she makes her big-screen return in ­Foxcatcher, which premiered at the BFI London Film Festival.

The 32-year-old, who plays wrestler's wife Nancy Schultz in Bennett Miller's true-life tale, outshone her co-stars Steve Carell and Vanessa ­Redgrave, shimmering in a metallic striped gown at the American Express gala in Leicester Square at the ­premiere last night.

She said the role, the first of five films she has shot since becoming a mother to two-year-old daughter Marlowe, came at the right time.

She said: "I'm really looking forward to it all. I really wanted to work hard. I didn't work for a year after my daughter was born, and I really wanted to knuckle down this year and get a lot under my belt.

"I wanted to get to a point where I could be a bit more selective."

Foxcatcher, which is based on real life events, tells the story of chemical fortune heir John du Pont and his friendship with Olympic medal-winning wrestling brothers, Dave and Mark Schultz.