The Supremes performing on "The Ed Sullivan Show" on December 21, 1969. The Supremes without Ross made their final appearance altogether on "Ed Sullivan" on February 15, 1970. Diana Ross & the Supremes gave their final performance on January 14, 1970 at the Frontier Hotel in Las Vegas. At the final performance, the replacement for Diana Ross, Jean Terrell, was introduced. According to Mary Wilson, after this performance, Berry Gordy wanted to replace Terrell with Syreeta Wright. Wilson refused, leading to Gordy stating that he was washing his hands of the group thereafter. This claim is also made by Mark Ribowsky. After
Diana Ross at Caesar's Palace's Circus Maximus Theater in Las Vegas, Nevada, during her "Tour '79" concert tour. This concert special is noted for its opening, during which Ross literally makes her entrance through a movie screen. In November of that year, Ross performed "The Boss" album's title track as a featured artist during the Macy's Thanksgiving Day Parade, in New York City. In 1980, Ross released her most successful album to date, "Diana". Composed by Chic's Nile Rodgers and Bernard Edwards, the album included the hits "I'm Coming Out" and "Upside Down", the latter becoming her fifth chart-topping single. Prior to