Amy Adams ensured all eyes were on her as she steals the spotlight in plunging lilac dress__See Photos

She’s got romantic competition from an artificially intelligent operating system in her new movie Her.

But Amy Adams ensured all eyes were on her at the movie’s premiere in New York on Saturday when she walked the red carpet in a plunging lilac dress.

The low-cut outfit was otherwise demure, ending below the knee and featuring long sleeves but the daring front and cut-out panels at the side drew attention.

Amy added nude heels, dangling earrings and pulled her red hair away from her face in a half-up style.

She was joined on the red carpet for the premiere, which was part of the 51st annual New York Film Festival by co-stars Rooney Mara and Olivia Wilde.

As ever, Rooney chose a dramatic look as she paired a black top featuring a cut out panel with a black and white skirt and black high heeled sandals.

She slicked her dark hair back and completed her look with dramatic eye make-up.

Olivia Wilde chose a more businesslike look, pairing wide-legged beige trousers with a white shirt and a gold clutch bag.

She left her hair loose over her shoulders as she posed on the carpet.

The movie stars Joaquin Phoenix as a lonely writer who falls in love with a Siri-like system named Samantha (voiced by Scarlett Johansson) which is designed to meet every one of Theodore (Phoenix)’s needs.

Single for a long time after having broken up with his wife (Mara), Theodore finds comfort in the company of Samantha

Despite simply being a computer system, the pair share passions and a frustrated Theodore eventually admits to his digital friend: ‘I’ve never loved anyone the way I love you.’

And it seems there is nothing artificial about it when Samantha replies, ‘Me too. Now I know how.’

Fortunately it looks like Theodore could have a much more substantial love interest crop up in the form of his friend Amy, played by Adams – who famously also starred opposite Joaquin in The Master.