Jodie Whittaker makes her first appearance as 'Doctor Who'

Jodie Whittaker's Doctor Who: Watch the Doctor's first female regeneration

His street name is Doctor Who.

The world's longest running science-fiction TV series, BBC's Doctor Who, is set for a historic moment in its upcoming Christmas Special, which airs around the world on December 25.

But how will Whittaker be introduced to the world as the Thirteenth Doctor?

The Doctor also chastised his predecessor for sexist comments, with his rebuttals also sending a clear message to any viewers who remain uncomfortable with the fact a woman will take control of the TARDIS next year.

The good news is that it's very easy to watch Doctor Who in the UK. Most people are emotional about Capaldi's exit and head over heels for Whittaker's introduction while a small few were unhappy with the overall execution of what is Steven Moffat's final episode as showrunner.

The Twelfth Doctor was the polar opposite to perennial fanboy and fangirl favourites David Tennant and Matt Smith: darker, distant, more mysterious, allied to caustic humour and, in his own words, "more alien than he's been in a while".

Peter Capaldi is not expected to attempt this during the forthcoming episode, Twice Upon A Time.

"The final chapter of the Twelfth Doctor's journey sees the Time Lord team up with the first ever Doctor and a returning Bill Potts for one last adventure."

The highly anticipated moment happened right at the very end of the Christmas episode Twice Upon A Time as Peter Capaldi bowed out of the series, and Jodie stepped in as the new regeneration.

In its first twenty-six years, only one episode of Doctor Who fell on Christmas Day.