Watch: Susan Boyle battles stage fright on Dancing With The Stars

Susan Boyle shot to international fame after her star-making turn on Britain's Got Talent in 2009, but it seems she hasn't quite gotten a handle on her nerves.

Appearing on Dancing With The Stars in the United States, Susan seemed petrified, sporting a pained expression for the duration of her performance.

Duet partner Donny Osmond noticed her discomfort, reaching over the hold her hand as she sang to help calm her nerves.

Since her 'I Dreamed A Dream' audition, Susan has inspired a legion of unlikely aspiring singers to have their crack at stardom. Click here to watch the best.

Check out their rendition of Frank Wildhorn and Leslie Bricusse's 'This Is The Moment' above. What do you think could have inspired Susan's bad case of nerves?