Hollywood beauty Reese Witherspoon was left a sweating wreck during the
filming of upcoming Johnny Cash biopic, when she had to sing in front of a
Witherspoon gets nervous in large groups of people and found her role
playing Cash's wife JUNE CARTER CASH in Walk the Line a difficult challenge.
She says, "I have extreme anxiety in front of crowds and I have to sing in
this new Johnny Cash movie.
"I sweat in places I didn't know you could sweat. But nervousness is
sometimes a good thing. It pushes you forward."