Rebel Wilson spotted in Beverly Hills for the first time since claiming Sacha Baron Cohen is the 'a**hole' she refers to in her explosive new memoir… after thanking followers for their support

Rebel Wilson has been seen for the first time since claiming that actor Sacha Baron Cohen is the 'a**hole' she refers to in her explosive new memoir.

The 44-year-old appeared upbeat as she went shopping in Beverly Hills on Tuesday, just hours after claiming that Sacha was the celebrity responsible for making threats over her no-holds-barred memoir, Rebel Rising.

The Australian actress flashed a smile as she was seen walking to a nearby store in black sport tights and a matching coloured shirt.

Rebel completed her look with a black jacket, a pair of black sneakers and kept a low profile with sunglasses.

The sighting comes after Rebel thanked fans for offering their support after claiming Cohen was threatening her over the release of the memoir.

Rebel Wilson has been seen for the first time since claiming that actor Sacha Baron Cohen is the 'a**hole' she refers to in her explosive new memoir

'Thanks so much for everyone who has sent gorgeous messages of support in the last few days and to those who shared with me their stories of this a**hole,' she wrote in a Wednesday Instagram Story.

'Don't worry I won't be bullied or threatened by this guy! And I am working hard behind the scenes to make sure my book comes out!'

She added: 'PS my book is not ABOUT this guy - this is one chapter.'

Sacha has strenuously denied Rebel's claims as 'demonstrably false.'

On Monday, a rep for the Borat actor shared a statement with TMZ, writing: 'While we appreciate the importance of speaking out, these demonstrably false claims are directly contradicted by extensive detailed evidence.

'Including contemporaneous documents, film footage, and eyewitness accounts from those present before, during and after the production of The Brothers Grimsby.'

The 44-year-old appeared upbeat as she went shopping in Beverly Hills on Tuesday, just hours after claiming that Sacha was the celebrity responsible for making threats over her no-holds-barred memoir, Rebel Rising

Rebel originally claimed she was facing potential legal action after dedicating an entire chapter to a difficult working experience with an unnamed former co-star - branded an 'a**hole' by Rebel.

She has since confirmed the actor in question is Sasha, 52 - best known for his comedy creations Ali G and Borat - with whom she starred in 2016 action-comedy Grimsby.

Taking to Instagram on Sunday, she wrote: 'I will not be silenced by high priced lawyers or PR crisis managers. The a****** I am talking about in ONE CHAPTER of my book is: Sacha Baron Cohen.'

The post came just two days after the Pitch Perfect star alleged that a celebrity she once worked with was threatening her over the release of the memoir.

'I wrote about an a**hole in my book,' she told Instagram followers. 'Now, said a****** is trying to threaten me. He’s hired a crisis PR manager and lawyers.

The sighting comes after Rebel thanked fans for offering their support after claiming Cohen was threatening her over the release of the memoir

'He is trying to stop press coming out about my book. But the book WILL come out and you will all know the truth.'

In an Instagram video shared on March 15, Rebel revealed that she has dedicated a chapter in her book to the 'massive a**hole' she worked with in Hollywood.

She also claimed she would eventually name the male colleague, whose alleged behaviour prompted her to adopt a 'no a**holes policy' on set.

She wrote: 'When I first came to Hollywood, people were like, "Yeah, I have a no-a**holes policy that means, like, I don't work with a**holes." I was like, "Yeah, I mean, that sounds sensible and logical."

Sasha broke his silence on Monday after Rebel claimed he is the 'a**hole' she refers to in her memoir

'But then it really sunk in what they were meaning by that, older people in the industry. Because I worked with a massive a**hole, and, yeah, now I definitely have a no-a**holes policy.

'Chapter one said a**hole — it is chapter 23, that guy was a massive a**hole.'

She added: 'Do you want to know who is the biggest a**hole I've ever worked with in Hollywood? Chapter 23 lists it all out! Do you wanna know why I have a 'no a**holes' policy now with people I work with?

'I wrote about an a**hole in my book. Now, said a****** is trying to threaten me. He’s hired a crisis PR manager and lawyers.

Rebel originally claimed she was facing potential legal action after dedicating an entire chapter to a difficult working experience with an unnamed former co-star - branded an 'a**hole' by Wilson 

'Well it's all in the book: REBEL RISING available for pre-order now (drops April 2nd, link in bio)… oh and YES I name the a**hole!'

Rebel and Sasha starred together in Grimsby alongside Mark Strong, Gabourey Sidibe and Isla Fisher - Cohen's wife of 14-years.

Sasha portrays reformed football hooligan Norman 'Nobby' Grimsby who is forced to go on the run with his brother - a suave secret agent played by Kingsman star Strong.

Rebel plays his on-screen love interest Dawn while Cohen's real-life love and fellow Australian actress Fisher plays Jodie Figgs.

Rebel and Sasha starred together in the comedy flop Grimsby, released in 2016