World-renowned artist Diana Ross will work with the Top 12 finalists this week on American Idol Tuesday, March 13 (8:00-10:00 PM ET live/PT tape-delayed), and will perform on the results show Wednesday, March 14 (9:00-9:30 PM ET live/PT tape-delayed) on FOX. The contestants will perform songs from the Diana Ross and the Supremes songbook.

In a remarkable career spanning four decades, Ross has proven to be the consummate music artist, as well as one of the iconic female singers of all time. Beginning in the 1960s as lead singer of the world-renowned group the Supremes, and later as a solo performer, Ross achieved the unprecedented feat of 18 No. 1 singles in the U.S., rivaled only by the Beatles for the position of the biggest hit group of that generation.

In 1970, Ross moved to a solo career and for over three decades has continued to produce chart singles and sell-out tours, at the same time showing herself to be a successful business woman. Her many accomplishments include an Oscar nomination for her first film role, an extraordinary performance as Billie Holiday in Lady Sings the Blues. She recently returned to the U.S. charts with her highest-debuting album in two decades, "I Love You."

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