Diana Ross was denied a US number-one Pop hit.
Diana (album) . The album is the biggest-selling studio album of Ross 's career , selling nine million copies worldwide and spawning three international hit singles , including the US number 1 hit `` Upside Down '' . Diana Ross . The group released a record-setting twelve number-one hit singles on the US Billboard Hot 100 , including `` Where Did Our Love Go '' , `` Baby Love '' , `` Come See About Me '' , `` Stop ! Her 1980 semi-eponymous album Diana reached number 2 on the US Billboard albums chart , and spawned the number-one hit `` Upside Down '' , and the international hit `` I 'm Coming Out '' . 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 .