United Kingdom, Dec. 16 -- Amanda Seyfried's stage fright is stopping her from performing on Broadway.

The 40-year-old actress used to dream of starring on Broadway, but Amanda admits that she'd be too anxious to sing in front of a live audience.

Speaking about the challenge of singing in The Testament of Ann Lee, the new historical musical drama film, Amanda told Vanity Fair: "I'm always striving to just be a little better. But this movie has made me step back a bit and appreciate what I already have.

"My voice coach is like, 'Where have you been' because I've known her for so long, and I'm like, 'I'm okay now.' I think my plan was to do a musical on Broadway, and then I made the decision to never put myself through that - because to ...