Brinkley writes in her memoir that it started out as a song for a "mystery girl" Joel had been having phone conversations with, but when his relationship with Brinkley began, he finished it in her honor. Their relationship was then immortalized in the hit song's iconic music video, in which Brinkley appears in.

The supermodel recounts some of her most life-changing moments, such as her April 1994 helicopter crash and her love story with the Piano Man

Despite their tumultuous 11-year marriage, Billy Joel and Christine Brinkley are on good terms. On April 29, he 71-year-old model and actress opened up about their relationship and marriage in her new memoir Uptown Girl,