First recorded (as “My Boy Lollypop”) by Barbie Gaye (1956).
Hit version by Millie Small (US #2/UK #2/IRE #1 1964).
From the wiki: “‘My Boy Lollipop’ (originally written as ‘My Girl Lollypop’) was written in the mid-1950s by Robert Spencer of the doo-wop group The Cadillacs, and is usually credited to Spencer, Morris Levy, and Johnny Roberts. It was first recorded in New York in 1956 by Barbie Gaye. A cover version, recorded eight years later by Jamaican teenager Millie Small, with very similar rhythm, became one of the top-selling ska songs of all time.