Carly Simon says the second verse of her hit song You're So Vain is about Warren Beatty.

The 70-year-old singer told People magazine that she has "confirmed that the second verse is Warren".

She added that Beatty "thinks the whole thing is about him!"

Simon will release the memoir Boys In The Trees on November 24.

The subjects behind You're So Vain, released in 1972, have been a matter of speculation for years.

The singer said the number one hit is about three men, including Beatty, though she is not naming the others.

Simon was married to James Taylor, and People said she has been linked to Sir Mick Jagger, Kris Kristofferson, Jack Nicholson and Cat Stevens.