Scarlett Johansson attends Dolce and Gabanna: The make up launch held at Selfridges depatment store, London on July 31, 2009 in London. [CFP]

Scarlett Johansson wants to be Frank Sinatra.

The 'Lost in Translation' star admits the Rat Pack singer-and-actor was one of her childhood heroes and she hopes to emulate his singing voice in the future.

She said: "I always wanted to be Frank Sinatra. Even as a little kid, I always thought I'd grow up and sound like Sinatra. I'm still waiting for that to happen.

Despite her success, Scarlett - who is set to release her second album, 'The Break-Up', a series of duets with close friend Pete Yorn - admits she is still astonished when she lands big jobs.

She added to Britain's The Times newspaper: "That always shocks me, when I get hired for anything. Either as an actor or, in this case, a vocalist for hire.

"As soon as one project ends you never think you will get the chance again. I was just flattered that Pete thought of me and put the faith in me that I could creatively collaborate on anything."