Jenna Coleman believes it's "absolutely possible" Doctor Who could be a woman.
The 29-year-old actress currently plays the Doctor's companion, Clara Oswald, but believes the show shouldn't be strict about the protagonist's gender as there's "no reason" why the character couldn't regenerate as a female at some point in the future.
When asked if she thought it could happen, she said: "I think it's absolutely possible. There's no reason why not.
"I think Peter Capaldi is doing the most wonderful job so there's not currently a vacancy."
The star isn't the only one to share the idea, as current Doctor, Peter, said he "would expect" for the character to be played by a woman at some point after he leaves the part.
Speaking at Comic-Con in San Diego, he said: "I would expect so at some point, why not? Absolutely.
"I would expect it at any moment. If you turn around right now I might suddenly transform."
However, not all 'Doctor Who' cast members shared the same views as Jenna and Peter, as Michelle Gomez, who plays the Doctor's nemesis Missy, insisted the character is "all man".
She said: "Can I just say on The Doctor's behalf, it's hard for any of us to see past this one - and he's all man."
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