Keira Knightley would "hide in a corner and cry" if the world was coming to an end.

The British actress stars in Seeking a Friend for the End of the World alongside Steve Carell, which is about a man who is searching for his childhood sweetheart as an asteroid nears planet Earth.

Keira has joked that she'd fall to pieces if she ever found herself in the same situation.

"I'd hide in a corner and cry! I think! You know, we sort of went through all those kind of, 'What's on your list?' Like would you jump out of a plane? Would you go to an orgy? Would you take lots of drugs?" she mused in an interview with the British edition of OK! magazine.

"Honestly, if someone said a meteor is going to destroy the earth in 20 days, I think I'd be so preoccupied with whether it was going to hurt or not that I'd just be terrified! And in a corner, yeah."

Keira plays a harmonica in the upcoming comedy film. The 27-year-old beauty - who recently announced her engagement to her Klaxons rocker beau James Righton - appreciates music, but has never indulged in the past time herself.

"I love people who love music, in the same way that I love people who are real enthusiasts about anything. And I think music in particular touches people in an amazingly emotional way," she explained. "Most of my friends are passionate and absolutely obsessed with music. I haven't been like that at all. I've actually come at it quite late. I didn't like it when I was a teenager. I also never liked 'the scene' and what's cool. I hate that."