On this date in 1972, THE HAPPIEST GIRL IN THE WHOLE USA by DONNA FARGO entered the Billboard Hot 100 at #52 (Jun 29, 1972) The Happiest Girl In The Whole U.S.A. was a huge hit song for Donna Fargo. Fargo's first single on Dot Records, became a number-one country hit in the spring of 1972, and subsequently became a hit on the Billboard Hot 100 pop music chart, peaking at #11. The record earned Fargo a Grammy for Best Country Vocal Performance, Female, at the 15th Annual Grammy Awards on March 3,