What name did Christie Brinkley call Billy Joel? What special gift did he give her? Find out in her memoir "Uptown Girl."

Former Sports Illustrated model Christie Brinkley has had no shortage of accomplishments throughout her lengthy career. In addition to being one of the most famous supermodels, Brinkley has also become known for her work as an actress,

Brinkley writes in her memoir that it initially 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 forever immortalized in the hit song's iconic music video, in which Brinkley appears in.