Emma Watson has broken her silence on the Harvey Weinstein affair as the disgraced Hollywood mogul was today accused of rape.

The Miramax co-founder was sacked from his position on Sunday after numerous women - including actresses Ashley Judd and Ambra Battilana - went public about his alleged behaviour.

The producer who has ties to almost every big name in Hollywood worked with Emma Watson in 2011 when she starred in his film My Week With Marilyn.

The 27-year-old actress and campaigner for equal rights tweeted this afternoon in support of the women who had come forward.

Posting to Twitter, she wrote: 'I stand with all the women who have been sexually harassed, and am awestruck by their bravery. This mistreatment of women has to stop. '

'It has got to stop': Today Emma Watson has condemned sexual violence against women as more allegations about Harvey Weinstein come forward. Pictured above, the movie mogul grabbing the then-nineteen-year-old actress as they left Mahiki nightclub in 2011

Former friends: Emma Watson, pictured above with Weinstein at a pre-BAFTA dinner in 2011, has broken her silence on the allegations after he was today accused of rape

Speaking out: The 27-year-old Goodwill Ambassador for the UN said she was awestruck by the bravery of sexual harassment victims

Watson worked with Weinstein when she was 19 on a film his company was producing.

They were pictured together shortly after partying in Central London after a night at the BAFTAs.

In images taken at the time, a young Watson can be seen leaving Mahiki nighclub in London as the then 58-year-old producer grabbed her from behind.

In recent years Watson has become a leading figure in the fight for gender equality after taking up her position as Women Goodwill Ambassador for the UN in 2014.

She joins one of few high-profile actors to speak out about the allegations as Weinstein's former contemporaries Gwenyth Paltrow and Julia Roberts remain quiet.

Watson's comments today came just hours after the latest allegation against Weinstein emerged.

Italian actress Asia Argento has come forward accusing Weinstein of raping her.

He was at a party hosted by Miramax at the Hotel du Cap-Eden-Roc when Weinstein led to her an empty room and asked her to give him a massage.

She reluctantly agreed, and halfway through he began to perform oral sex on her despite her repeated request for him to stop.

Afterwards Argento said her career suffered which she believed was linked to the fact she asked him to stop.

In images taken at the time, a 19-year-old Watson can be seen being grabbed by the 58-year-old producer as they left London nightclub Mahiki

More victims emerge: Asia Argento (above in 2004) says that Harvey Weinstein raped her in a hotel room at the Hotel du Cap-Eden-Roc back in 1997

Recording: Model Ambra Battilana (above) can be heard repeatedly rejecting Weinstein's requests to have her join him in his bedroom

In total, 13 women said that they were sexually harassed or assaulted by Weinstein and three said that they were raped.

An investigation by The New York Times claimed on Thursday that Weinstein repeatedly sexually harassed a number of female employees and movie stars over the course of his three-decade career as one of Hollywood's most celebrated studio heads.

In one case he reportedly asked Ashley Judd if she would like to watch him shower during a meeting in his room at the Peninsula Beverly Hills and paid $100,000 to Rose McGowan for an unknown incident shortly after she filmed her breakthrough role in the film 'Scream.'

That settlement is one of eight that Weinstein has reportedly paid out over the past 30 years, with Italian model Ambra Battilana also getting an undisclosed sum in 2015 after accusing the Hollywood executive of groping her and putting his hand under her skirt.

Weinstein was fired on Sunday by The Weinstein Company just days after the Times published their findings.

The movie mogul was ousted by his own company's board of directors. Weinstein founded the firm with his brother Bob in 2005 when he left Miramax.

But since the allegations made national headlines, many A-listers have kept quiet.

George Clooney and Jennifer Lawrence are among the few to publicly condemn their former boss.

Actress Jennifer Lawrence has called the allegations against Weinstein 'disturbing and upsetting'. The pair are pictured together at the GLAAD Media Awards in 2013

George Clooney and Harvey Weinstein at the Confessions of a Dangerous Mind premiere in New York in November 2002

The producer helped Jennifer Lawrence win an Oscar with Silver Linings Playbook and gave Clooney his first break on the big screen in From Dusk Till Dawn and as a director in Confessions of a Dangerous Mind.

But the A-listers turned on Weinstein - a man once revered as a god by some of the world's best actors - after he was fired from his own production company over dozens of sexual harassment allegations.

In an interview last night, Clooney broke his silence and called Weinstein's behavior 'indefensible', adding that 'the problem is deeply ingrained in our society' and that anybody who is aware of sexual harassment and does not speak out is 'complicit'.

Clooney told the Daily Beast: ‘It’s indefensible. That’s the only word you can start with.

'Harvey’s admitted to it, and it’s indefensible. I’ve known Harvey for 20 years.

'We’ve had dinners, we’ve been on location together, we’ve had arguments. But I can tell you that I’ve never seen any of this behavior—ever.'

Jennifer Lawrence echoed Clooney's sentiments, stating although she had not witnessed Weinstein's inappropriate acts herself, she still condemned the producer.

She told Variety: 'I was deeply disturbed to hear the news about Harvey Weinstein's behavior. This kind of abuse is inexcusable and absolutely upsetting.'