But just her hair. Weird, right?
Well, when the redheaded actress shaved off her long locks to appear as Nebula in Guardians of the Galaxy, she apparently donated them to Episode VII. From an interview she did with Collider:
Was it just very liberating to shave your head, or did you have any moments of tears while they were doing it?
GILLAN: No, I was laughing hysterically. 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.
I assume Gillan gave them the hair for a purpose, and not just as a creepy gift, although maybe Lucasfilm could be saving the hair for some reason? I don't know. I do know someone is going to turn this harmless and amusing trivia into some kind of rampant, unfounded speculation, and it may as well be me. I say this means Luke Skywalker's former Imperial assassin-turned-Jedi wife Mara Jade is making her debut in Episode VII, and her hair is going to be fantastic. Who's with me?