Who dubbed the singing voice of the character Maria in the 1961 film version of West Side Story?

And you finally got to see what she looked like in "The Sound of Music". Actually she was quite pretty, too pretty for a nun. Damn! Beauty, talent. What more do you want? ....... luck. Napoleon is thought to have said on the recommendation of a young, daring, accomplished soldier to lead the charge: "Yes, I know he's brilliant. But is he lucky?"