Mara, the older sister of The Girl With the Dragon Tattoo star Rooney Mara, is next starring in the upcoming superheroes blockbuster Fantastic Four, playing Sue Storm - the Invisible Woman.
The actress revealed she was occasionally happy to stay out of sight herself, to help cope with her innate shyness.
She told You she was "so relieved" when she didn't win after being nominated for an Emmy for House Of Cards, saying: "I was sitting there in the audience panicking, thinking, 'Oh help, what if I win? Please don't make me have to go up there'!"
Mara also revealed she and her sister are keen to work together on a project, something their filming schedules have not yet allowed, and that they are "casually looking around for something we could do".
"So far, nothing has been quite right, but we want to do it."
- AAP