Elsa Pataky shows off her ripped arms on the set of her new Netflix action film Interceptor

Filming is well and truly underway on the set of Netflix‘s new action film Interceptor, with Elsa Pataky seen in costume for the first time on Wednesday.

The 44-year-old Spanish actress was spotted filming scenes in Sydney alongside her lookalike body doubles.

Elsa will lead the film as a soldier who must save the world when 16 nuclear missiles are launched in the United States.

The bombshell showed off her ripped arms in a white singlet and brown trousers as she filmed scenes for the highly-anticipated film.

She also wore brown boots and had a band wrapped around her muscular arms.

Elsa’s husband Chris Hemsworth is producing the action film alongside Kathy Morgan, Christopher Mapp, Robert Slaviero, and Peter D. Graves.

Australian actor Luke Bracey will co-star, but Elsa’s husband is not expected to act in the movie, instead settling for a behind-the-scenes role.

In March, Elsa told News Corp that she has been rehearsing moves for the film using a toy pistol at home with her husband Chris and their three children.

‘I brought home a toy gun to practice with and was showing my kids a fight I have to do and they were really excited. Especially my daughter, who has two brothers who keep telling her “we’re stronger than you” and she says “no way!”

The actress continued: ‘She can now see in what ways she can be stronger.’

Last month, Chris’ personal trainer Luke Zocchi put Elsa through her paces during a tough workout focusing on her back, arms and shoulders.

‘Look at the shred! There is a new big dog in town,’ Luke said as he filmed Elsa during her sweat session.

Luke not only trains Chris, but also Chris’ stunt double, Bobby Holland Hanton.

Bobby was heard in the gym cheering on Elsa, yelling: ‘Yes, Elsa! Smashing it!’

In previous training videos, Elsa has also demonstrated her ability to perform one-arm push-ups.

Meanwhile, Elsa recently spoke candidly about her decision to step away from acting at the peak of her career to raise a family.

She told Jones magazine she’d selflessly put her acting career on hold after having children so her husband could focus on making movies.

‘I decided to focus on them and leave my career on the side, to just do little things here and there and try to be happy with that, even though it was my passion and I loved what I did,’ the mother of three said.

However, as Chris’ career flourished, Elsa couldn’t help but feel envious.

‘It was hard in some moments, because you see the person you love doing what you’re so passionate about, you see them doing movies, and you wish you could too,’ she added.

‘But because of my family I didn’t want to shoot anywhere else and it was Chris’ moment, I just let him know that he could do what he had to do and we’ll follow.’