"One of my friends was like, 'You turn into an ice queen. What is it? You turn into a bitch"," the Sun quoted her as saying. "I don't mean to look like a bitch, but I get completely paralysed with shyness," she added.
The actress, who recently split from actor Rupert Friend, blamed her lack of social skills on early success. "I'd never sat in pubs, been out clubbing, any of the things you normally do I'd bypassed," she said.