Whoopi Goldberg has confessed she used to make extra cash as a phone sex operator.

The Sister Act star started talking dirty in a bid to supplement her income when she was struggling to make ends meet while chasing her acting dreams in Hollywood.

Revealing her big secret on The View on Friday, Goldberg insists the phone job helped her become a better actress: "What you have to do is you have to be a good actor... When I was younger, the money was great."

But she fears it's not a job she can return to now she's a big star, insisting, "People would know my voice."