The grandmother song of scathing lyrics, Carly Simon's "You're So Vain" remains a mystery as to who it's about. Simon's official website plays up the riddle, saying, when the song was a hit in 1973, "Carly had just married fellow pop-superstar James Taylor a month before, so when 'You're So Vain' hit the airwaves, it stirred intense curiosity about which one of her previous lovers was the subject of this wry nod to the male ego." It names Mick Jagger (who sings back up on the song), Cat Stevens, Warren Beatty, and Kris Kristofferson as possible inspirations. But Simon has remained mum on the subject, and seems content to never reveal it.