Scarlett Johansson has revealed that she is "disappointed" and baffled by Ivanka Trump's reluctance to take a public stance on controversial issues related to her father Donald Trump's administration in the US.

The Avengers actress has portrayed the first daughter in a tongue-in-cheek Saturday Night Live sketch called 'Complicit' which pokes fun at Trump's feminist credentials ("A feminist, an advocate, a champion for women – but, like, how?") and her steadfast loyalty to her father.

Ivanka, who was recently appointed to an official unpaid role in the Republican administration, gave an interview to CBS News earlier this week where she was asked about what it means to be called "complicit".

She responded carefully: "If being complicit is wanting to be a force for good and to make a positive impact, then I'm complicit."

Ivanka also suggested that she voices disagreement with her father "quietly and directly and candidly".

Johansson has now spoken about the interview, saying the first daughter could have a "big impact" by being more vocal about her father's controversial policies.

Speaking at the Women in the World summit in New York, she said: "If you take a job as a public advocate, then you must advocate publicly. You can't have it both ways.

"Powerful women often get concerned with this idea that they're going to be seen in this unforgiving light. Screw that. It's so old-fashioned... It's so uninspired and actually really cowardly.

"And I was so disappointed by that interview she gave.

"She has an opportunity to really make a big impact just by being vocal... I've met her several times in the past, and she's a very well-spoken, smart, intelligent woman.

"The whole situation baffles me", she added.