Aimee Lou Wood "learned to express [herself]" by "always doing impressions" growing up.
The 31-year-old actress said acting out different characters in her "little mini universe" helped her to talk to other people and make friends.
Aimee told the new issue of Radio Times magazine: "I was always doing impressions.
"I was very shy, but in private, I'd be talking to myself, and dressing up in wigs and creating my own little mini universe. It gave me calm.
"I didn't even know what my real voice was because I'd be constantly doing accents and different voices.
"I would sing my thoughts; I found it easier to express myself that way.
"All of a sudden, I could talk to people and find friends. It's how I learned to express myself."
Growing up, the White Lotus star felt a "deep need" to be "n