Of course it was her voice! Not only in ladies in the chorus, also in all her films : the river of no return, gentlemen prefer blondes, some like it hot, etc
Everytime I see a young Marilyn on the screen, I can't help but wonder how her life would have been different(if at all),if she had never met the Kennedys
She’s VERY young in this one and the recording equipment distorts the voice + the fact, our voices sound a bit more… Um innocent and fresh, when younger. I know from personal singing experience. My voice has changed during my 40 years of life.