Stevie Nicks was on Rumours as a singer.
Stephanie Lynn `` Stevie '' Nicks ( born May 26 , 1948 ) is an American singer-songwriter who is often regarded as the Queen of Rock n ' Roll . Nicks is best known for her work as the front-woman of Fleetwood Mac and for her chart-topping solo career . Rumours , Fleetwood Mac 's second album after the incorporation of Nicks and Buckingham , was the best-selling album of the year of its release , and to date , has made sales of over 40 million copies worldwide , making it the fifth-highest selling studio album of all time .