She's currently pregnant with her second child, so a body double was required to film Lena Headey's harrowing scenes in the Game Of Thrones season five finale.

And now her doppelganger has been unveiled as 27-year-old actress and model Rebecca Van Cleave, who has been credited on IMDb as 'naked Cercei' from Monday night's explosive episode.

The British/American beauty's image was used in the full-frontal nude shots when Lena's disgraced character, Queen Regent Cercei Lannister, was humiliated by walking naked down the streets of King's Landing to atone for her crimes.

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Double trouble: Actress and model Rebecca Van Cleave (left) has been revealed as Lena Headey's (right) body double in the harrowing Game Of Thrones finale

The shocking scenes saw Cercei's long, flowing locks being shorn off before she was stripped and made to appear in front of a screaming, mud-slinging mob.

The incredibly powerful performance, which took three days to film, involved Lena's power-hungry alter-ego being spat upon, cut, and having excrement thrown at her.

It was reported last year that producers spent an incredible $50,000 a day protecting Headey's modesty on set with 200 security guards during filming.

Walk of shame: The harrowing series five finale of Game Of Thrones saw Cercei Lannister forced to walk naked before a baying mob

Strong woman: Only when she has made it through the blood-thirsty crowd does she allow herself to cry

Under wraps: The 41-year-old actress announced she was expecting her second child earlier this year and was no doubt pregnant during the filming of the episode last September

The star, who has appeared nude on camera in the past, later had her head super-imposed on lookalike Rebecca's body thanks to some seamless computer graphics.

Rebecca was in Dubrovnik, Croatia at the time the episode was filmed last September, revealing on her social media account she had undergone a dramatic chop much like Cercei herself.

The producers' choice of a much younger, 27-year-old model with a fantastic body will no doubt attract criticism from some fans.

A very, very sleepy face.

Back in the chair.

Good morning. pic.twitter.com/E5pMqqQ3kc — Rebecca Van Cleave (@rebeccajoean) May 9, 2015

In George R.R. Martin's fantasy books, part of the humiliation stems from the fact that Cercei - who has borne three children - is forced to reveal her body and all its flaws.

Lena, who has a five-year-old son named Wylie with her ex-husband Peter Loughran, recently opened up about the process of filming the emotionally-raw scenes.

She told Entertainment Weekly: It’s not hard when people are screaming at you and you look like s**t and you’re being f**king humiliated to figure out how that would feel.

'There’s a part of you that’s f***ing terrified. I can’t even imagine people wanting your blood. Cersei has done wrong, but she doesn’t really deserve this.'