She was unveiled as the 13th Time Lord back in July, and is due to replace Peter Capaldi at Christmas.

And it has been claimed that Capaldi's Doctor Who will refuse to regenerate into Jodie Whittaker in the upcoming festive special Twice Upon A Time, in a leaked episode synopsis from BBC America.

According to The Express, the details of the Christmas episode were revealed on BBC America's website, with a Blu-ray edition already on pre-sale.

Scroll down for video

Final outing: It has been claimed that Capaldi's Doctor Who will refuse to regenerate into Jodie Whittaker in the upcoming festive special Twice Upon A Time, in a leaked episode synopsis from BBC America

13th Time Lord: According to The Express , the details of the Christmas episode were revealed on BBC America's website, with a Blu-ray edition already on pre-sale and it revealed that Capaldi was 'refusing to face regeneration' which would turn him into first female Time Lord Jodie (above)

Although the episode details didn't shed any light on Jodie's entrance, it did give sci-fi fanatics a taste of what was to come before it was pulled from the website.

The website reports the episode will begin with Two Doctors stranded in snow, refusing to face regeneration.

The Doctors are Capaldi and David Bradley, who will portray the First Doctor, a part originally played by William Hartnell.

Tantalising: Although the episode details didn't shed any light on Jodie's entrance, it did give sci-fi fanatics a taste of what was to come

Revelation: The website reports the episode will begin with Two Doctors stranded in snow, refusing to face regeneration

Double act; The Doctors are Capaldi and David Bradley (left), who will portray the First Doctor, a part originally played by William Hartnell

The episode will also feature a First World War British Army Captain, played by Mark Gatiss, who reportedly will play a key role in the Doctor's story.

The synopsis continues that the 12th Doctor must 'face his past to decide his future' and will discover hope in his darkest hour.

It concluded by saying that although it marked the end of an era, the Doctor's journey is just beginning.

Representatives for Doctor Who declined to comment when approached by Mail Online.

Fans of the iconic show will be tuning in with bated breath to see Jodie take up the Tardis as the first female Doctor Who

Drama: The episode will also feature a First World War British Army Captain, played by Mark Gatiss, who reportedly will play a key role in the Doctor's story

Explosive: The synopsis continues that the 12th Doctor must 'face his past to decide his future' and will discover hope in his darkest hour

Iconic: It concluded by saying that although it marked the end of an era, the Doctor's journey is just beginning

Back together: Pearl Mackie, who plays Doctor Who's sidekick Bill Potts, was seen embracing the Time Lord

The decision to cast a female actress in the role, which has previously been played by only men, divided fans.

Jodie said: 'It feels completely overwhelming, as a feminist, as a woman, as an actor, as a human, as someone who wants to continually push themselves and challenge themselves, and not be boxed in by what you're told you can and can't be.

'It feels incredible.'

She also reassured fans to 'not be scared by my gender'.

'Because this is a really exciting time, and Doctor Who represents everything that's exciting about change,' she said, adding: 'The fans have lived through so many changes, and this is only a new, different one, not a fearful one.'

While many praised the BBC and the show's writers for choosing a female actress, others slammed the decision as 'political correctness gone mad'.

Doctor Who: Twice Upon a Time will air on BBC on December 25.