Christie Brinkley and Billy Joel's relationship lasted nearly a decade before the couple divorced. Brinkley admitted that she didn't want to leave Joel, but his drinking problem was too much for her to handle.

Christie Brinkley once thought Billy Joel was her soulmate. But in her new book, Uptown Girl, the 71-year-old model reveals how his battles with alcohol ultimately shattered that dream—and their marriage.

Christie Brinkley opened up about the breaking point moment that led to her breakup and divorce from ex-husband Billy Joel ahead of the release of her memoir 'Uptown Girl' on April 29. Here's when she knew she "couldn't live" with Joel any longer.