Diana Ross, for one, is a popular American singer, songwriter, actress, and record producer. She is best known as the lead singer of the Motown group The Supremes, during the 1960s. She has since become a successful solo artist, with hits such as 'Ain't No Mountain High Enough' and 'I'm Coming Out'. Her career has spanned over five decades and she has been recognized with numerous awards, including a Grammy Award, a Golden Globe Award, and an Academy Award nomination. She is also known as a Pop Diva, a term used to describe a female pop music star.