Star Wars Episode 7's cast has been a closely guarded secret so far, with only R2-D2, Carrie Fisher and (possibly) Adam Driver slated to star, but today comes an important update: Karen Gillan's severed hair will feature.

The actress, who memorably shaved her head for the role of Nebula in the upcoming Guardians of the Galaxy movie, explained that her locks have been made into a luscious wig coveted by all of Hollywood and coming soon to the head of a Star Wars character.

When asked by Collider if she was sad to lose her hair, Gillan replied: "No, I was laughing hysterically.

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"It really hit me when I woke up the next morning. That's when I was like, 'Oh my God, where's my hair?!' But also, everyone kept me in good spirit. Everyone was laughing and telling jokes. Marvel are the best company to work for, they really are. They treat you really well.

"They made my hair into the most incredible well-made wig and they gave it to the Star Wars people. It's just so funny to think that my hair is made into a wig, next to all these Star Wars monster heads in a warehouse. I thought that was really funny."

Exactly who will wear Gillan's hair is unknown, with original cast members Fisher, Harrison Ford and Mark Hamill having been touted but not confirmed for a return.

Ford took part in a Reddit AMA last week, but mostly swerved Star Wars questions to talk about manchego cheese.