'The Sixties were a very swinging time for Frank - he was having sex with a variety of bimbos and cementing his Rat Pack status. It's a really key time to his mythology. Tina really wants to make sure that a sanitised Frank comes through, and that it's not overly negative,' the source added.

Tina recently made it clear that the film which is expected to star Leonardo DiCaprio as Sinatra should refute the reports of her father's criminal dealing, and told reporters: 'I don't want him to be driving the getaway car. That would not be fair.'

The as-yet-untitled project is slated for release in 2011.