Premise: Diana Ross . By 1975 , the Mahogany soundtrack included her third number-one hit , `` Theme from Mahogany ( Do You Know Where You 're Going To ) '' . Her eponymous 1976 album included her fourth number-one hit , `` Love Hangover '' . After leaving Motown , Ross achieved her sixth and final US number-one Pop hit , with the duet `` Endless Love '' , composed for the Brooke Shields film of the same name , by and performed with former Commodores front man , Lionel Richie . In 1993 , the Guinness Book of World Records declared Ross the most successful female music artist in history , due to her success in the United States and United Kingdom for having more hits than any female artist in the charts , with a career total of 70 hit singles with her work with the Supremes and as a solo artist .
Hypothesis: Diana Ross had many hits in her career.
Label: ENTAILMENT