Kristen Wiig used to worry that she was too old for Hollywood.

The 40-year-old star - who shot to fame with her hit comedy Bridesmaids in 2011 - was concerned she was too old to make it in the industry after the excitement of moving to Hollywood wore off and she realized other most other aspiring actresses were far younger than her.

"When I first moved there, there was 'the dream,' as there is for a lot of people. Then I got really scared. I moved there and I was like, 'Oh, I don't have any experience,' and I was surrounded by people a lot younger than I am, a lot better looking than I am, who've been acting for a while, who've been taking classes, who already have agents and I just felt like, 'Oh, there's a lot of work I have to do.'"

The Secret Life of Walter Mitty actress first decided to pursue a career in acting during a class at an art college in Arizona, and although she struggled to find work after moving to Los Angeles she admits she came into her own after she joined an improv group, The Groundlings: "I was like, 'Oh my God, I love it,' which was weird because I was terrified of being on stage. But the idea of being someone else and not myself didn't scare me as much."