Karen Gillan's battled with aliens and travelled across time, but find out how a witch's hat made the Doctor Who star red-faced when she was a kid...
The Amy Pond actress also reveals in her When I Was 10 interview why her school nickname was upside down carrot!
Growing up, Matt Smith's buddy liked playing chess and the piano - and wanted to be a musician as well as an actress.
Believe it or not, her school report said she lacked enthusiasm. Click play to find out what Karen had to say about that!