Reese Witherspoon calls Friends appearance one of her 'scariest moments ever'

The actress and film producer has revealed details of her appearance on the popular sitcom. "Being on Friends, still to this day, is one of my scariest moments ever, because it was in front of a live audience, and I had never really done theatre," Reese, 48, told People in a new interview. "I'd never been in front of a live audience." Reese appeared in the show as Jill, the younger sister of Jennifer Aniston's character Rachel. The Legally Blonde star went on to explain that she was joined on set by her daughter Ava.