The Happiest Girl In The Whole USA, is original with Donna Fargo, which in 1972 was a totally new name at the starry sky.
But before 1973 was over, The Happiest Girl In The Whole USA, had two of the biggest names in Nashville recorded; The Happiest Girl In The Whole USA. I think of Tammy Wynette and Sonny James.
I do not think it has happened before that a debut name gets her hit re-recorded by the greatest names.