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.

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,

In her memoir 'Uptown Girl,' Christie Brinkley writes about the scary incident that led her to divorce Billy Joel.