Carly Simon will judge the videos herself
Singer-songwriter Carly Simon has launched a competition giving fans the chance to make the first ever video for her 1972 song, You're So Vain.
The star has never publicly revealed who inspired the track - although she has denied it was Mick Jagger. She said people still ask her about it.
"People were so busy asking me who the song was about that nobody thought to make a video of it," she said.
The winning video will be shown at New York's Tribeca Film Festival in April.
The song revolves around a self-assured man who has girls falling at his feet.
The lyrics in the chorus accuse him of being "so vain I bet you think this song is about you."
Speculation about who the song was about has included Simon's first husband James Taylor, or one of her many ex-boyfriends, such as Warren Beatty, Cat Stevens or Kris Kristofferson.
However, singing on Janet Jackson's single Son Of A Gun, which samples You're So Vain, Simon stated "the song is not about Mick".
Launching her competition, the singer told entrants to draw on "all sorts of magic in the air" for their video submissions.
She also offered a few pointers which they might want to include, such as featuring a yacht, a Learjet and a horse race, all of which are mentioned in the song.
Simon, who will judge the entries herself, will also present the winner with a prize from her "personal archives."
A new version of the song was released last year on Simon's album Never Been Gone, which largely featured rerecorded versions of her best-known tunes.